@InCollection{ Ende1992a,
  title = "Mechanisering en automatisering bij het Centraal Bureau voor de Statistiek. De groeiende vraag naar gegevensverwerkende apparatuur",
  booktitle = "Jaarboek voor de Geschiedenis van Bedrijf en Techniek",
  author = "J. van den Ende",
  publisher = "NEHA",
  address = "Amsterdam",
  pages = "236--260",
  year = "1992",
  organization = "NEHA",
  volume = "9",
  shorttitle = "Automatisering bij het CBS"
}

@InCollection{ Wit1992a,
  title = "Wat niet te verzekeren valt: Electrologica als casus uit de opbouw van een Nederlandse computerindustrie (1956--1967)",
  booktitle = "Jaarboek voor de Geschiedenis van Bedrijf en Techniek",
  author = "D. de Wit",
  publisher = "NEHA",
  address = "Amsterdam",
  pages = "261--291",
  year = "1992",
  organization = "NEHA",
  volume = "9"
}

@InCollection{ Ende1989a,
  title = "Rekenen aan waterstromen; getijdenonderzoek in Nederland, 1920--1950",
  booktitle = "Jaarboek van de Geschiedenis van Bedrijf en Techniek",
  author = "Jan van den Ende and Frida de Jong",
  publisher = "Fischer",
  organization = "Stichting voor de Geschiedenis van Bedrijf en Techniek",
  address = "Utrecht",
  pages = "191--209",
  year = "1989",
  shorttitle = "Getijdenonderzoek in Nederland",
  volume = "6"
}

@InCollection{ Wit1989a,
  title = "Facetten van een automatiseringsbeleid: De Postcheque- en Girodienst",
  booktitle = "Jaarboek van de Geschiedenis van Bedrijf en Techniek",
  author = "D. de Wit",
  publisher = "Fischer",
  organization = "Stichting voor de Geschiedenis van Bedrijf en Techniek",
  address = "Utrecht",
  pages = "234--256",
  year = "1989",
  shorttitle = "Automatiseringsbeleid Postcheque- en Girodienst",
  volume = "6"
}

@Article{ Kranakis1988a,
  title = "Early Computers in The Netherlands",
  author = "Eda Kranakis",
  journal = "CWI Quarterly",
  pages = "61--84",
  volume = "1",
  number = "4",
  month = dec,
  year = "1988"
}

@Article{ Alberts2002a,
  title = "Een halve eeuw computers in Nederland: 1. Een willekeurig getal",
  author = "Gerard Alberts",
  journal = "Nieuwe Wiskrant",
  pages = "6--8",
  volume = "22",
  number = "1",
  month = oct,
  year = "2002",
  shorttitle = "Een willekeurig getal"
}

@Article{ Alberts2003a,
  title = "Een halve eeuw computers in Nederland: 2. Het geluid van rekentuig",
  author = "Gerard Alberts",
  journal = "Nieuwe Wiskrant",
  pages = "17--23",
  volume = "22",
  number = "3",
  month = mar,
  year = "2003",
  shorttitle = "Het geluid van rekentuig"
}

@Book{ Oost1998a,
  title = "De opkomst van de informatietechnologie in Nederland",
  editor = "E. van Oost and G. Alberts and J. van den Ende and H.W. Lintsen",
  publisher = "Ten Hagen Stam",
  address = "Den Haag",
  year = "1998",
  shorttitle = "Opkomst van de informatietechnologie"
}

@Book{ Campbell2004a,
  title = "Computer. A history of the information machine",
  author = "Martin Campbell-Kelly and William Aspray",
  publisher = "Westview Press",
  edition = "2e druk",
  year = "2004",
  shorttitle = "Computer"
}

@Book{ Alberts1998a,
  title = "Jaren van berekening. Toepassingsgerichte initiatieven in de Nederlandse wiskundebeoefening 1945 -- 1960",
  author = "Gerard Alberts",
  publisher = "Amsterdam University Press",
  address = "Amsterdam",
  year = "1998",
  shorttitle = "Jaren van berekening"
}

@InCollection{ Scholten1987a,
  title = "Computers ontwerpen, toen",
  booktitle = "Zij mogen uiteraard daarbij de zuivere wiskunde niet verwaarloozen",
  author = "C.S. Scholten",
  editor = "G. Alberts and F. van der Blij and J. Nuis",
  publisher = "CWI",
  organization = "CWI",
  location = "Amsterdam",
  address = "Amsterdam",
  pages = "240--250",
  year = "1987"
}

@InCollection{ Alberts1987a,
  title = "De rekenafdeling",
  booktitle = "Zij mogen uiteraard daarbij de zuivere wiskunde niet verwaarloozen",
  author = "G. Alberts",
  editor = "G. Alberts and F. van der Blij and J. Nuis",
  publisher = "CWI",
  organization = "CWI",
  location = "Amsterdam",
  address = "Amsterdam",
  pages = "224--235",
  year = "1987"
}

@InCollection{ Nielen1955a,
  title = "Het UNIVAC systeem",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine II",
  author = "G.C.J.F. Nielen",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "28--31",
  year = "1969",
  note = "26 februari 1955",
  shorttitle = "UNIVAC"
}

@InCollection{ Poel1953a,
  title = "De PTERA",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine I",
  author = "W.L. van der Poel",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "88-94",
  year = "1969",
  note = "26 september 1953",
  shorttitle = "PTERA"
}

@InCollection{ Blaauw1953a,
  title = "De Mark IV rekenmachine van Harvard university",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine I",
  author = "G.A. Blaauw",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "52--57",
  year = "1969",
  note = "31 januari 1953",
  shorttitle = "Mark IV"
}

@InCollection{ Blaauw1954a,
  title = "De A.R.R.A.",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine I",
  author = "G.A. Blaauw",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "138--147",
  year = "1969",
  note = "29 mei 1954",
  shorttitle = "ARRA"
}

@InCollection{ Berghuis1955a,
  title = "De electronische rekeneenheid GAMMA",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine II",
  author = "J. Berghuis",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "32--37",
  year = "1969",
  note = "26 maart 1955",
  shorttitle = "GAMMA"
}

@InCollection{ Poel1956a,
  title = "Logical structure of the ZEBRA",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine II",
  author = "W.L. van der Poel",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "48--53",
  year = "1969",
  note = "27 februari 1956",
  shorttitle = "ZEBRA"
}

@InCollection{ Loopstra1956a,
  title = "De ARMAC (Automatische Rekenmachine Mathematisch Centrum)",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine II",
  author = "B.J. Loopstra",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "54--66",
  year = "1969",
  note = "26 mei 1956",
  shorttitle = "ARMAC"
}

@InCollection{ Heyn1956a,
  title = "Philips' Experimentele Tweetallige Electronische Rekenmachine",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine II",
  author = "H.J. Heijn",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "82--89",
  year = "1969",
  note = "27 oktober 1956",
  shorttitle = "PETER"
}

@Article{ Alberts2000a,
  title = "De lichamelijkheid van het rekenen",
  author = "Gerard Alberts",
  journal = "i \& i",
  pages = "42--47",
  volume = "18",
  number = "1",
  year = "2000"
}

@Article{ Ende1990a,
  title = "Tidal Calculations in The Netherlands, 1920--1960",
  author = "Jan van den Ende",
  journal = "CWI Quarterly",
  pages = "285--302",
  volume = "3",
  number = "4",
  month = dec,
  year = "1990",
  shorttitle = "Tidal Calculations"
}

@Article{ Cohen1990a,
  title = "Howard Aiken and the Beginnings of Computer Science",
  author = "I. Bernard Cohen",
  journal = "CWI Quarterly",
  pages = "303--324",
  volume = "3",
  number = "4",
  month = dec,
  year = "1990",
  shorttitle = "Howard Aiken"
}

@Article{ Ende1995a,
  title = "A History of Real-Time Industrial Process Control in the Dutch Steel-Making Industry",
  author = "Jan van den Ende",
  journal = "Real-TIme Systems",
  pages = "215--226",
  volume = "8",
  year = "1995",
  shorttitle = "Process Control in Dutch Steel-Making Industry"
}

@Article{ Ende1995b,
  title = "Computers and Industrial Organization: Early Sources of `Just in Time' Production in the Dutch Steel Industry",
  author = "Jan van den Ende",
  journal = "IEEE Annals of the History of Computing",
  pages = "22--32",
  volume = "17",
  number = "2",
  year = "1995",
  shorttitle = "`Just in Time' Production in the Dutch Steel Industry"
}

@TechReport{ Donselaar1967a,
  title = "De ontwikkeling van elektronische rekenmachines in Nederland (Een historisch overzicht van Nederlandse computers)",
  author = "P.J. van Donselaar",
  institution = "Stichting Het Nederlands Studiecentrum voor Administratieve Automatisering en Bestuurlijke Informatieverwerking",
  address = "Amsterdam",
  month = jul,
  year = "1967",
  shorttitle = "Elektronische rekenmachines in Nederland"
}

@Book{ Feijen1991a,
  title = "C.S. Scholten dedicata: van oude machines en nieuwe rekenwijzen",
  editor = "W.H.J. Feijen and A.J.M. van Gasteren",
  publisher = "Academic Service",
  address = "Schoonhoven",
  year = "1991",
  shorttitle = "Scholten dedicata"
}

@InCollection{ Blaauw1991a,
  title = "Faith and the Art of Computer Maintenance. Reflections on the ARRA computers",
  booktitle = "C.S. Scholten dedicata: van oude machines en nieuwe rekenwijzen",
  author = "Gerrit A. Blaauw",
  editor = "W.H.J. Feijen and A.J.M. van Gasteren",
  publisher = "Academic Service",
  address = "Schoonhoven",
  pages = "27--39",
  year = "1991",
  shorttitle = "Faith and the Art of Computer Maintenance"
}

@InCollection{ Eijbergen1991a,
  title = "Carel Scholten als ``Fabrikant''",
  booktitle = "C.S. Scholten dedicata: van oude machines en nieuwe rekenwijzen",
  author = "J. van Eijbergen",
  editor = "W.H.J. Feijen and A.J.M. van Gasteren",
  publisher = "Academic Service",
  address = "Schoonhoven",
  pages = "49--55",
  year = "1991"
}

@InCollection{ Slob1991a,
  title = "Geschiedenis voor Carel Scholten",
  booktitle = "C.S. Scholten dedicata: van oude machines en nieuwe rekenwijzen",
  author = "Arie Slob",
  editor = "W.H.J. Feijen and A.J.M. van Gasteren",
  publisher = "Academic Service",
  address = "Schoonhoven",
  pages = "175--183",
  year = "1991"
}

@InCollection{ Stam1991a,
  title = "Op het grensvlak van wetenschap en techniek",
  booktitle = "C.S. Scholten dedicata: van oude machines en nieuwe rekenwijzen",
  author = "Piet Stam",
  editor = "W.H.J. Feijen and A.J.M. van Gasteren",
  publisher = "Academic Service",
  address = "Schoonhoven",
  pages = "211--216",
  year = "1991"
}

@InCollection{ Troye1991a,
  title = "Herinneringen aan het Mathematisch Centrum",
  booktitle = "C.S. Scholten dedicata: van oude machines en nieuwe rekenwijzen",
  author = "N.C. de Troye",
  editor = "W.H.J. Feijen and A.J.M. van Gasteren",
  publisher = "Academic Service",
  address = "Schoonhoven",
  pages = "217--228",
  year = "1991"
}

@InCollection{ Zonneveld1991a,
  title = "Rekenen in de vijftiger jaren",
  booktitle = "C.S. Scholten dedicata: van oude machines en nieuwe rekenwijzen",
  author = "J.A. Zonneveld",
  editor = "W.H.J. Feijen and A.J.M. van Gasteren",
  publisher = "Academic Service",
  address = "Schoonhoven",
  pages = "239--247",
  year = "1991"
}

@Book{ Blanken2002a,
  title = "Een industriële wereldfederatie",
  series = "Geschiedenis van koninklijke Philips Electronics N.V.",
  author = "I.J. Blanken",
  publisher = "Europese Bibliotheek",
  address = "Zaltbommel",
  volume = "5",
  year = "2002"
}

@book{ Verhagen1960a,
  title = "Rekenmachines in Delft",
  author = "C.J.D.M. Verhagen",
  institution = "Technische Hogeschool te Delft",
  publisher = "Commissie Rekenmachines",
  address = "Delft",
  year = "1960"
}

@TechReport{ Dijkstra1960a,
  title = "Cursus programmeren in Algol 60",
  author = "E.W. Dijkstra",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-33",
  year = "1960",
  url = "http://repos.project.cwi.nl:8888/cwi_repository/docs/I/09/9254A.pdf"
}

@TechReport{ Dijkstra1954a,
  title = "``Drijvende komma'' rekentechniek (ARRA subroutines RD1 en RD2)",
  author = "E.W. Dijkstra",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-16",
  year = "1954",
  url = "http://repos.project.cwi.nl:8888/cwi_repository/docs/I/09/9273A.pdf"
}

@TechReport{ Dijkstra1953a,
  title = "Functionele beschrijving van de ARRA",
  author = "E.W. Dijkstra",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-12",
  year = "1953",
  url = "http://repos.project.cwi.nl:8888/cwi_repository/docs/I/09/9277A.pdf"
}

@TechReport{ Dijkstra1955a,
  title = "Handboek voor de programmeur (FERTA) I",
  author = "E.W. Dijkstra",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-17",
  year = "1955",
  url = "http://repos.project.cwi.nl:8888/cwi_repository/docs/I/09/9272A.pdf"
}

@TechReport{ Dijkstra1955b,
  title = "Handboek voor de programmeur (FERTA) II",
  author = "E.W. Dijkstra",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-20",
  year = "1955",
  url = "http://repos.project.cwi.nl:8888/cwi_repository/docs/I/09/9269A.pdf"
}

@TechReport{ Dijkstra1955c,
  title = "Het communicatieprogramma van de ARRA",
  author = "E.W. Dijkstra",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-21",
  year = "1955",
  url = "http://repos.project.cwi.nl:8888/cwi_repository/docs/I/09/9268A.pdf"
}

@TechReport{ Dijkstra1956a,
  title = "Het standaard typprogramma van ARMAC",
  author = "E.W. Dijkstra",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-24",
  year = "1956",
  url = "http://repos.project.cwi.nl:8888/cwi_repository/docs/I/09/9265A.pdf"
}

@TechReport{ Dijkstra1954b,
  title = "In- en uitvoer van de ARRA",
  author = "E.W. Dijkstra",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-14",
  year = "1954",
  url = "http://repos.project.cwi.nl:8888/cwi_repository/docs/I/09/9275A.pdf"
}

@TechReport{ Dijkstra1956b,
  title = "Korte beschrijving van de opdrachtencode etc. voor de ARMAC",
  author = "E.W. Dijkstra",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-23",
  year = "1956",
  url = "http://repos.project.cwi.nl:8888/cwi_repository/docs/I/09/9266A.pdf"
}

@article{ Dijkstra1962a,
  title = "Operating Experience with ALGOL 60",
  author = "E.W. Dijkstra",
  journal = "The Computer Journal",
  number = "5",
  year = "1962",
  pages = "125--127",
  note = "MR-47 r"
}

@TechReport{ Dijkstra1956c,
  title = "Programmering voor de ARMAC, 1; Algemeen",
  author = "E.W. Dijkstra",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-25",
  year = "1956",
  url = "http://www.cs.utexas.edu/users/EWD/MCReps/MR25.PDF"
}

@TechReport{ Dijkstra1957a,
  title = "Programmering voor de ARMAC, 1a; Algemeen",
  author = "E.W. Dijkstra",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-25 a",
  year = "1957",
  url = "http://www.cs.utexas.edu/users/EWD/MCReps/MR25a.PDF"
}

@TechReport{ Dijkstra1956d,
  title = "Programmering voor de ARMAC, 2; De inhoud der geblokkeerde kanalen",
  author = "E.W. Dijkstra",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-26",
  year = "1956",
  url = "http://www.cs.utexas.edu/users/EWD/MCReps/MR26.PDF"
}


@TechReport{ Dijkstra1956e,
  title = "Programmering voor de ARMAC, 3; Interpretatief programma voor drijvende komma berekening",
  author = "E.W. Dijkstra",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-27",
  year = "1956",
  url = "http://www.cs.utexas.edu/users/EWD/MCReps/MR27.PDF"
}

@TechReport{ Dijkstra1957b,
  title = "Programmering voor de ARMAC, 5; Interpretatief programma voor breuken van dubbele lengte",
  author = "E.W. Dijkstra",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-29",
  year = "1957",
  url = "http://www.cs.utexas.edu/users/EWD/MCReps/MR29.PDF"
}

@TechReport{ Dekker1957a,
  title = "Cursus programmeren voor automatische rekenmachines",
  author = "T.J. Dekker and E.W. Dijkstra and A. van Wijngaarden",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "CR-9",
  year = "1957",
  url = "http://www.cs.utexas.edu/users/EWD/MCReps/CR1957-009.PDF"
}

@TechReport{ Dijkstra1956f,
  title = "Programmeren voor automatische rekenmachines. Cursus 1955/56",
  author = "E.W. Dijkstra and A. van Wijngaarden",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "CR-7",
  year = "1956",
}

@TechReport{ Dekker1959a,
  title = "Programmering voor de ARMAC, 6; Matrix complex RAM",
  author = "T.J. Dekker",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-30",
  year = "1959",
  url = "http://repos.project.cwi.nl:8888/cwi_repository/docs/I/09/9257A.pdf"
}

@TechReport{ Loopstra1957a,
  title = "Cursus constructie X1, 1",
  author = "B.J. Loopstra and C.S. Scholten",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "CR-10.1",
  year = "1957"
}

@TechReport{ Loopstra1957b,
  title = "Cursus constructie X1, 2",
  author = "B.J. Loopstra and C.S. Scholten",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "CR-10.2",
  year = "1957"
}

@TechReport{ Loopstra1956b,
  title = "Constructie van automatische rekenmachines. Cursus 1955/56",
  author = "B.J. Loopstra and C.S. Scholten",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "CR-6",
  year = "1956"
}

@TechReport{ Scholten1958a,
  title = "Zelf-controlerende codes",
  author = "C.S. Scholten",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "ZW-11",
  year = "1952"
}

@TechReport{ Wijngaarden1948a,
  title = "Algemeen overzicht van moderne rekenmachines",
  author = "A. van Wijngaarden",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-1",
  year = "1948"
}

@TechReport{ Wijngaarden1949a,
  title = "Algemeen overzicht van moderne rekenmachines",
  author = "A. van Wijngaarden",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "DR-5",
  year = "1949",
  url = "http://repos.project.cwi.nl:8888/cwi_repository/docs/I/09/9289A.pdf"
}

@TechReport{ Wijngaarden1953a,
  title = "Het gebruik van automatische rekenmachines",
  author = "A. van Wijngaarden",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "DR-12",
  year = "1953"
}

@TechReport{ Wijngaarden1948b,
  title = "Principes der electronische rekenmachines. Cursus februari 1948",
  author = "A. van Wijngaarden",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "CR-3",
  year = "1948"
}

@TechReport{ Wijngaarden1948c,
  title = "Principes der electronische rekenmachines",
  author = "A. van Wijngaarden",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "DR-1",
  year = "1948"
}

@TechReport{ Wijngaarden1951a,
  title = "Programmeren voor de ARRA",
  author = "A. van Wijngaarden",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-7",
  year = "1951",
  url = "http://repos.project.cwi.nl:8888/cwi_repository/docs/I/09/9282A.pdf"
}

@TechReport{ Bakker1957a,
  title = "Programmering voor de ARMAC, 3a; Interpretatief programma voor complexe getallen met drijvende komma's",
  author = "N.C. Bakker",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-27a",
  year = "1957",
  url = "http://repos.project.cwi.nl:8888/cwi_repository/docs/I/09/9260A.pdf"
}

@TechReport{ Vasmel-Kaarsemaker1957a,
  title = "Programmering voor de ARMAC, 4; Interpretatief programma voor het werken met 6-voudige lengte getallen",
  author = "L. Vasmel-Kaarsemaker",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "MR-28",
  year = "1957",
  url = "http://repos.project.cwi.nl:8888/cwi_repository/docs/I/09/9259A.pdf"
}

@book{ Troye1987a,
  title = "From ARRA to Apple",
  author = "NC de Troye",
  publisher = "Philips International Institute",
  location = "Eindhoven",
  year = "1987",
  url = "http://library.tue.nl/csp/dare/LinkToRepository.csp?recordnumber=476005",
  note = "afscheidsrede"
}

@article{ Kosten1950a,
  title = "Electronische rekenmachines",
  author = "L. Kosten",
  journal = "Het P T T-bedrijf",
  volume = "3",
  number = "1",
  month = may,
  year = "1950",
  pages = "1--16"
}

@article{ Kosten1953b,
  title = "PTERA IV. ``A 7''",
  author = "L. Kosten",
  journal = "Het P T T-bedrijf",
  volume = "5",
  number = "4",
  month = dec,
  year = "1953",
  pages = "148--163"
}

@article{ Poel1953c,
  title = "PTERA III. Het programmeren voor PTERA",
  author = "W.L. van der Poel",
  journal = "Het P T T-bedrijf",
  volume = "5",
  number = "4",
  month = dec,
  year = "1953",
  pages = "135--147"
}

@article{ Poel1953b,
  title = "PTERA II. De werking van PTERA",
  author = "W.L. van der Poel",
  journal = "Het P T T-bedrijf",
  volume = "5",
  number = "4",
  month = dec,
  year = "1953",
  pages = "124--134"
}

@article{ Kosten1953a,
  title = "PTERA I. Wordingsgeschiedenis van PTERA; doel en mogelijkheden",
  author = "L. Kosten",
  journal = "Het P T T-bedrijf",
  volume = "5",
  number = "4",
  month = dec,
  year = "1953",
  pages = "116--123"
}

@article{ Poel1959a,
  title = "The simple code for ZEBRA",
  author = "W.L. van der Poel",
  journal = "Het P T T-bedrijf",
  volume = "9",
  number = "2",
  month = aug,
  year = "1959",
  pages = "31--66"
}


@InCollection{ Scholten1952a,
  title = "Een of meer adrescodes in rekenmachines?",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine I",
  author = "C.S. Scholten",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "41--51",
  note = "20 december 1952",
  year = "1969"
}

@InCollection{ Dijkstra1953b,
  title = "Arithmetische methodes, ten dienste van de programmering",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine I",
  author = "E.W. Dijkstra",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "58--64",
  year = "1969",
  note = "28 februari 1953",
  shorttitle = "Arithmetische methodes"
}

@InCollection{ Wijngaarden1953b,
  title = "Rekenmethodes voor automatische rekenmachines",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine I",
  author = "A. van Wijngaarden",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "73--80",
  note = "30 mei 1953",
  year = "1969"
}

@InCollection{ Dijkstra1954c,
  title = "Controle op binaal-decimale conversie",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine I",
  author = "E.W. Dijkstra",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "111--119",
  note = "30 januari 1954",
  year = "1969"
}

@InCollection{ Scholten1955a,
  title = "Zelf-controlerende codes",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine II",
  author = "C.S. Scholten",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "38--44",
  note = "26 november 1955",
  year = "1969"
}

@InCollection{ Dijkstra1956g,
  title = "Het communicatieprogramma van de ARMAC",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine II",
  author = "E.W. Dijkstra",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "67--74",
  note = "30 juni 1956",
  year = "1969"
}

@InCollection{ Dannenburg1956a,
  title = "De berekening van eigenwaarden en -vectoren van matrices op de FERTA",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine II",
  author = "H.J. Dannenburg",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "90--97",
  note = "24 november 1956",
  year = "1969"
}


@InCollection{ Dijkstra1957c,
  title = "Enige ordeningsproblemen",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine II",
  author = "E.W. Dijkstra",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "107--114",
  note = "23 februari 1957",
  year = "1969"
}

@InCollection{ Dijkstra1957d,
  title = "Multi-lengte programmering",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine II",
  author = "E.W. Dijkstra",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "160--165",
  note = "29 juni 1957",
  year = "1969"
}

@article{ Sanders2000a,
  title = "Nora Schram: programmeur van het eerste uur. Debuggen met Dijkstra",
  author = "Rik Sanders",
  journal = "Computable",
  number = "1",
  month = jan,
  year = "2000",
  url = "http://www.computable.nl/artikel.jsp?archive=1&id=1433095",
  shorttitle = "Nora Schram: programmeur van het eerste uur"
}

@unpublished{ MCjaarverslag1946,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1946",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1947,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1947",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1948,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1948",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1949,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1949",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1950,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1950",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1951,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1951",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1952,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1952",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1953,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1953",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1954,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1954",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1955,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1955",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1956,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1956",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1957,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1957",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1958,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1958",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1959,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1959",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1960,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1960",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1961,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1961",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1962,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1962",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1963,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1963",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1964,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1964",
  address = "Amsterdam"
}
@unpublished{ MCjaarverslag1965,
  title = "Jaarverslag Mathematisch Centrum",
  institution = "Mathematisch Centrum",
  year = "1965",
  address = "Amsterdam"
}

@book{ Poel1962a,
  title = "Talen en kunsttalen",
  author = "W.L. van der Poel",
  publisher = "Uitgeverij Waltman",
  location = "Delft",
  year = "1962",
  note = "inaugurele rede"
}

@book{ Kosten1956a,
  title = "Mens en automaat",
  author = "L. Kosten",
  publisher = "Uitgeverij Waltman",
  location = "Delft",
  year = "1956",
  note = "inaugurele rede"
}

@TechReport{ Burgerhout1956a,
  title = "De ZEBRA. Deel II: motivering van de keuze",
  author = "Th.J. Burgerhout",
  institution = "Nationaal luchtvaartlaboratorium",
  number = "NLL-TM F. 180",
  month = feb,
  year = "1956",
  shorttitle = "Motivering ZEBRA NLL"
}

@article{ Poel1980a,
  title = "The Early History of Computing at PTT",
  author = "W.L. van der Poel",
  journal = "Delft Progress Report",
  volume = "5",
  year = "1980",
  pages = "174--184"
}

@article{ Poel1954a,
  title = "Dead programmes for a magnetic drum automatic computer",
  author = "W.L. van der Poel",
  journal = "Applied Scientific Research B",
  volume = "3",
  year = "1954",
  pages = "190--198"
}

@unpublished{ Poel2003a,
  title = "Curriculum Vitae of Willem Louis van der Poel",
  author = "W.L. van der Poel",
  year = "2003",
  url = "http://sepc.twi.tudelft.nl/~poel/packages/curricul.44q"
}

@article{ Korving2000a,
  title = "Korte-golfzenders. Honderd jaar onderzoek aan telegraaf, telefoon en radio",
  author = "Rob Korving",
  journal = "Delft Integraal",
  year = "2000",
  number = "6",
  url = "http://www.delftintegraal.tudelft.nl/info/index02e6.html?hoofdstuk=Artikel&ArtID=2045"
}

@article{ Alkemade2000a,
  title = "OD95. 1925--2000: van Delftsch Hoogescholfonds naar UFD",
  author = "Fons Alkemade",
  journal = "Delft Integraal",
  year = "2000",
  number = "5",
  url = "http://www.delftintegraal.tudelft.nl/info/index7acb.html?hoofdstuk=Artikel&ArtID=1973"
}

@incollection{ Poel1988a,
  title = "De ZEBRAclub. Causerie ter gelegenheid van het afscheid van Prof. dr. A. van der Sluis",
  author = "W.L. van der Poel",
  booktitle = "Symposium ter gelegenheid van de 60-ste verjaardag van A. van der Sluis",
  year = "1988",
  address = "Utrecht",
  shorttitle = "De ZEBRAclub"
}
@article{ Poel1989a,
  title = "De ontwikkeling van de computer in Nederland.",
  author = "W.L. van der Poel",
  journal = "Histechnicon",
  number = "1",
  volume = "15",
  year = "1989",
  month = apr,
  pages = "2--9",
  note = "Samenvatting van de causerie van prof. dr. ir. van der Poel ter gelegenheid van de Nationale Wetenschapsdag in het ITC te Delft op zondag 16 oktober 1988"
}

@article{ Poel1952a,
  title = "A simple electronic digital computer",
  author = "W.L. van der Poel",
  journal = "Applied Scientific Research B",
  volume = "2",
  year = "1952",
  number = "5",
  pages = "367--400"
}

@book{ Poel1988b,
  title = "Een leven met computers",
  author = "W.L. van der Poel",
  publisher = "TUDelft",
  location = "Delft",
  year = "1988",
  note = "afscheidsrede"
}

@InCollection{ Poel1956b,
  title = "De invoerorganisatie van de ZEBRA",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine II",
  author = "W.L. van der Poel",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "75--81",
  note = "29 september 1956",
  year = "1969"
}

@InCollection{ Poel1955a,
  title = "Floating addresses in an automatic digital computer",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine II",
  author = "W.L. van der Poel",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "19--27",
  note = "29 januari 1955",
  year = "1969"
}
@InCollection{ Poel1952b,
  title = "Welke opdrachten zijn essentiëel in een rekenmachine?",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine I",
  author = "W.L. van der Poel",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "27--33",
  note = "27 juni 1952",
  year = "1969"
}

@article{ Poel1949a,
  title = "Schakelingen van automatische cijfermachines",
  author = "W.L. van der Poel",
  journal = "Nederlands Tijdschrift voor Natuurkunde",
  number = "15",
  year = "1949",
  pages = "13--22",
  note = "Overdruk uit Nederlands Tijdschrift voor Natuurkunde pagina's 243--281"
}

@book{ Pronk1988a,
  title = "Vooruitgang, bit voor bit. \textit{Liber Amicorum ac Collegarum} bij het afscheid van Prof.dr.ir. W.L. van der Poel 26 oktober 1988",
  shorttitle = "Vooruitgang, bit voor bit",
  editor = "C. Pronk and W.J. Toetenel",
  publisher = "Delftse Universitaire Pers",
  address = "Delft",
  year = "1988"
}

@incollection{ Ord1988a,
  title = "Memories of forty years with Computers",
  author = "R.J. Ord-Smith",
  booktitle = "Vooruitgang, bit voor bit",
  editor = "C. Pronk and W.J. Toetenel",
  publisher = "Delftse Universitaire Pers",
  address = "Delft",
  year = "1988",
  pages = "30--34"
}

@incollection{ Wolbers1988a,
  title = "De tijd van PTERA en ZEBRA",
  author = "D.H. Wolbers",
  booktitle = "Vooruitgang, bit voor bit",
  editor = "C. Pronk and W.J. Toetenel",
  publisher = "Delftse Universitaire Pers",
  address = "Delft",
  year = "1988",
  pages = "63--64"
}

@incollection{ Herschberg1988a,
  title = "In plaats van een afscheidstoespraak",
  author = "I.S. Herschberg",
  booktitle = "Vooruitgang, bit voor bit",
  editor = "C. Pronk and W.J. Toetenel",
  publisher = "Delftse Universitaire Pers",
  address = "Delft",
  year = "1988",
  pages = "83--86"
}

@book{ Giessen1996a,
  title = "Onderzoek en ontwikkeling bij KPN. Een geschiedenis van de eerste honderd jaar",
  shorttitle = "Onderzoek en ontwikkeling bij KPN",
  author = "D. van de Nieuwe Giessen",
  publisher = "KPN Research",
  year = "1996",
  address = "Leidschendam"
}

@article{ Poel1956c,
  title = "Vacantieleergang 1956 ``Automatisering'' II: De functie en werking van automatische rekenmachines",
  author = "W.L. van der Poel",
  journal = "De Ingenieur",
  month = oct,
  year = "1956",
  number = "40 (Electrotechniek 10)",
  pages = "96--100"
}

@article{ Burgerhout1959a,
  title = "Enige beschouwingen over de elektronische rekenmachine ``ZEBRA'' van het Nationaal Luchtvaartlaboratorium",
  author = "Th.J. Burgerhout",
  journal = "De Ingenieur (Luchtvaarttechniek)",
  month = jun,
  year = "1959",
  volume = "71",
  number = "23",
  pages = "37--43"
}

@article{ Brooker1955a,
  author = "R.A. Brooker",
  title = "An attempt to simplify coding for the Manchester electronic computer",
  journal = "British Journal of Applied Physics",
  volume = "6",
  number = "9",
  pages = "307-311",
  url = "http://stacks.iop.org/0508-3443/6/307",
  year = "1955"
}

@article{ Wilkes1952a,
  author = "M.V. Wilkes and J.B. Stringer",
  title = "Micro-programming and the design of the control circuits in an electronic digital computer",
  journal = "Proceedings of the Cambridge Philosophical Society",
  volume = "49",
  year = "1953",
  pages = "230--238"
}

@phdthesis{ Poel1956d,
  author = "W.L. van der Poel",
  school = "Universiteit van Amsterdam",
  title = "The logical principles of some simple computers",
  year = "1956"
}

@incollection{ Poel1962b,
  author = "W.L. van der Poel",
  title = "Micro-programming and trickology",
  editor = "W. Hoffmann",
  booktitle = "Digitale Informations wandler",
  publisher = "Friedrich Vieweg und Sohn",
  address = "Braunschweig",
  year = "1962",
  pages = "269--311"
}

@book{ Hoffmann1962a,
  editor = "W. Hoffmann",
  title = "Digitale Informations wandler. Probleme der Informationsverarbeitung in ausgewählten Beiträgen",
  shorttitle = "Digitale informations wandler",
  publisher = "Friedrich Vieweg und Sohn",
  address = "Braunschweig",
  year = "1962"
}

@phdthesis{ Dijkstra1959a,
  author = "E.W. Dijkstra",
  school = "Universiteit van Amsterdam",
  title = "Communication with an automatic computer",
  year = "1959"
}

@article{ Bruyn1947a,
  title = "Enige aspecten der moderne rekenmachines",
  author = "H. de Bruyn",
  journal = "De Ingenieur",
  month = dec,
  year = "1947",
  number = "51 (Technisch Wetenschappelijk Onderzoek 8)",
  pages = "57--60"
}

@article{ Unk1956a,
  title = "Vacantieleergang 1956 ``Automatisering'' I: Inleiding",
  author = "J.M. Unk",
  journal = "De Ingenieur",
  month = oct,
  year = "1956",
  number = "40 (Electrotechniek 10)",
  pages = "91--96"
}

@article{ Oberman1956a,
  title = "Vacantieleergang 1956 ``Automatisering'' III: Automatisering van administraties",
  author = "R.M.M. Oberman",
  journal = "De Ingenieur",
  month = oct,
  year = "1956",
  number = "43 (Electrotechniek 11)",
  pages = "103--109"
}

@article{ Kosten1956b,
  title = "Vacantieleergang 1956 ``Automatisering'' IV: Organisatie van administratieve problemen en toepassingen op geldverkeer",
  author = "L. Kosten",
  journal = "De Ingenieur",
  month = nov,
  year = "1956",
  number = "46 (Electrotechniek 12)",
  pages = "113--117"
}

@article{ Nielen1956a,
  title = "Vacantieleergang 1956 ``Automatisering'' V: Electronische reken- en boekhoudmachines",
  author = "G.C. Nielen",
  journal = "De Ingenieur",
  month = dec,
  year = "1956",
  number = "50 (Electrotechniek 13)",
  pages = "123--125"
}

@article{ Haringx1956a,
  title = "Vacantieleergang 1956 ``Automatisering'' VI: Enkele essentiële elementen bij ver doorgevoerde automatisering",
  author = "J.A. Haringx",
  journal = "De Ingenieur",
  month = dec,
  year = "1956",
  number = "50 (Electrotechniek 13)",
  pages = "126--131"
}

@article{ Boelens1957a,
  title = "Vacantieleergang 1956 ``Automatisering'' VII: Mechanisatie van de productie van radio- en televisie-ontvangers",
  author = "W.W. Boelens",
  journal = "De Ingenieur",
  month = jan,
  year = "1957",
  number = "3 (Electrotechniek 1)",
  pages = "1--6"
}

@article{ Koolen1957a,
  title = "Vacantieleergang 1956 ``Automatisering'' VIII: Electrische besturing van gereedschapswerktuigen",
  author = "D.A.A. Koolen",
  journal = "De Ingenieur",
  month = feb,
  year = "1957",
  number = "5 (Electrotechniek 2)",
  pages = "7--15"
}

@article{ Unk1957a,
  title = "Vacantieleergang 1956 ``Automatisering'' IX: Electrische besturing van machines",
  author = "J.M. Unk",
  journal = "De Ingenieur",
  month = feb,
  year = "1957",
  number = "5 (Electrotechniek 2)",
  pages = "15--18"
}

@article{ Berkel1959a,
  title = "Een beschouwing van enkele mogelijkheden tot automatisering van de Postchèque- en Girodienst",
  author = "P.L.M. van Berkel",
  journal = "De Ingenieur",
  month = mar,
  year = "1959",
  number = "10 (Electrotechniek 2)",
  pages = "20--26"
}

@TechReport{ Hartree1947a,
  title = "Lectures on modern calculating machines",
  author = "D.R. Hartree",
  institution = "Mathematisch Centrum",
  address = "Amsterdam",
  number = "CR-7",
  year = "1947"
}

@article{ Kosten1958a,
  title = "De ZEBRA-rekenautomaat van de Technische Hogeschool is in gebruik genomen",
  author = "L. Kosten",
  journal = "T.H. mededelingen",
  volume = "6",
  number = "2",
  month = dec,
  year = "1958",
  pages = "38--44"
}

@book{ Philips1960a,
  title = "Omschakeling naar automatie. Enkele bijdragen over de ontwikkeling naar automatische informatieverwerking",
  shorttitle = "Omschakeling naar automatie",
  author = "Philips",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven"
}

@incollection{ Breek1960a,
  title = "De administratieve functie in het Philips concern",
  author = "P.C. Breek",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "0.0--0.4"
}

@incollection{ Kruyff1960a,
  title = "De betekenis van automatische informatieverwerking voor de onderneming",
  author = "H.A.A. de Kruyff",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "1.0--1.3"
}

@incollection{ Meeuwis1960a,
  title = "Aanpak van automatie in de administratie",
  author = "A. Meeuwis",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "2.0--2.12"
}

@incollection{ Jager1960a,
  title = "Het rekencentrum",
  author = "P. de Jager",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "3.0--3.7"
}

@incollection{ Terlunen1960a,
  title = "De invloed van de automatie op de administratieve personeelssterkte",
  author = "E. Terlunen",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "4.0--4.4"
}

@incollection{ Buis1960a,
  title = "Mechanisatie van de technische voorcalculatie als basis voor automatie",
  author = "C. Buis",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "5.0--5.8"
}

@incollection{ Heide1960a,
  title = "Mechanisatie van een materiaalplanning",
  author = "C. van der Heide",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "6.0--6.9"
}

@incollection{ Stel1960a,
  title = "De opbouw van productenspecificaties in ponskaarten",
  author = "J.A. Stel",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "7.0--7.12"
}

@incollection{ Sla1960a,
  title = "Toepassing van een IBM 650/RAMAC bij Philips Nederland",
  author = "D. Sla",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "8.0--8.5"
}

@incollection{ Monhemius1960a,
  title = "Simulatie op computers om wachttijd- en voorraadproblemen op te lossen",
  author = "W. Monhemius and A.R.W. Muyen",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "9.0--9.6"
}

@incollection{ Pietersma1960a,
  title = "Enkele integratiehulpmiddelen in de administratie",
  author = "D. Pietersma",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "10.0--10.6"
}

@incollection{ Veenendaal1960a,
  title = "De netto-loonberekening",
  author = "W. Veenendaal",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "11.0--11.13"
}

@incollection{ Nielen1960a,
  title = "PASCAL en STEVIN",
  author = "G. Nielen",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "12.0--12.10"
}

@incollection{ Koffeman1960a,
  title = "Het programmeren",
  author = "K.L. Koffeman",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "13.0--13.4"
}

@incollection{ Duijvestijn1960a,
  title = "Facetten van het wetenschappelijk rekenen",
  author = "A.J.W. Duijvestijn",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "14.0--14.2"
}

@incollection{ Vastrick1960a,
  title = "Opleiding en training voor ponskaaren- en automatie-apparatuur",
  author = "J.C. Vastrick",
  booktitle = "Omschakeling naar automatie",
  year = "1960",
  publisher = "N.V. Philips Gloeilampenfabrieken",
  address = "Eindhoven",
  pages = "15.0--15.3"
}

@article{ Heyn1961a,
  author = "H.J. Heijn and J.C. Selman",
  title = "The Philps Computer PASCAL",
  journal = "IRE Transactions on Electronic Computers",
  year = "1961",
  pages = "175--183"
}

@InCollection{ Heyn1954a,
  title = "Ontwerp van een invoerprogramma voor een electronische rekenmachine",
  booktitle = "Nederlands rekenmachine genootschap 1959 -- 1969. Colloquium Moderne Rekenmachine II",
  author = "H.J. Heijn",
  organization = "NRG en MC",
  address = "Amsterdam",
  pages = "11--18",
  note = "27 november 1954",
  year = "1969",
}

@article{ Nijenhuis1961a,
  title = "De ``PASCAL'', een zeer snelle digitale elektronische rekenmachine voor Philips' rekencentrum",
  shorttitle = "De ``PASCAL''",
  author = "W. Nijenhuis",
  journal = "Philips Technisch Tijdschrift",
  number = "1",
  volume = "23",
  year = "1961",
  pages = "1--32"
}

@article{ Veen2005a,
  title = "Een schildpad als rekentuig. De Testudo, voorloper van de huidige p.c.",
  shorttitle = "Een schildpad als rekentuig",
  author = "R. van der Veen",
  journal = "Delft Integraal",
  year = "2005",
  number = "1",
  url = "http://www.tudelft.nl/live/pagina.jsp?id=339fb018-21db-4bcc-a5fe-a105ce2c8c14&lang=nl&binary=/doc/DI051-32-34.pdf",
  pages = "32--34"
}

@article{ Makkink2005a,
  title = "ALGOL 60, programmeren zonder beeldscherm",
  author = "H. Makkink",
  journal = "Delft Integraal",
  year = "2005",
  number = "4",
  url = "http://www.tudelft.nl/live/pagina.jsp?id=e08485e0-301f-4932-ad69-b6dc7b575751&lang=nl&binary=/doc/DI05-4-11OD95.pdf",
  pages = "34--37"
}

@article{ Poel2005a,
  title = "Met drieënzestig symbolen",
  author = "W.L. van der Poel",
  journal = "Nieuw Archief voor Wiskunde",
  number = "4",
  year = "2005",
  month = dec,
  url = "http://www.math.leidenuniv.nl/~naw/serie5/deel06/dec2005/pdf/vanderpoel.pdf",
  pages = "312--316"
}

@article{ MCIngenieur1947a,
  title = "Het Mathematisch Centrum. Doelstelling en organisatie",
  journal = "De Ingenieur",
  number = "10 (Algemeen 10)",
  year = "1947",
  pages = "102--103"
}

@article{ Boxma1948a,
  author = "IJ. Boxma",
  title = "Enige aspecten der moderne rekenmachines",
  journal = "De Ingenieur",
  number = "3 (Technisch Wetenschappelijk Onderzoek 1)",
  year = "1948",
  pages = "9--10"
}

@article{ EW1949a,
  author = "E.W.",
  title = "De transistor",
  journal = "De Ingenieur",
  number = "45 (Electrotechniek 13)",
  year = "1949",
  pages = "135--136"
}

@article{ Kosten1951a,
  author = "L. Kosten",
  title = "IV. Beschrijving van een machine voor kunstmatig verkeer op electronische basis",
  journal = "De Ingenieur",
  number = "44 (Electrotechniek 7)",
  year = "1951",
  pages = "62--66"
}

@article{ Freudenthal1951a,
  author = "H. Freudenthal",
  title = "Wat kunnen rekenmachines doen?",
  journal = "De Ingenieur",
  number = "5 (Werktuig- en scheepsbouw 3)",
  year = "1951",
  pages = "19--22"
}

@article{ ARRAIngenieur1952a,
  title = "De ARRA",
  journal = "De Ingenieur",
  number = "27 (Algemeen 27)",
  year = "1952",
  pages = "300--301"
}

@article{ Bu1955a,
  title = "De Analogue Computor van het Nationaal Luchtvaartlaboratorium",
  journal = "De Ingenieur",
  number = "20 (Luchtvaarttechniek 3)",
  year = "1955",
  pages = "31--32"
}

@article{ Buhrman1956a,
  title = "De Shorts Analog Computor van het Nationaal Luchtvaartlaboratorium",
  author = "J. Buhrman",
  journal = "De Ingenieur",
  number = "21 (Luchtvaarttechniek 2)",
  year = "1956",
  pages = "16--19"
}

@incollection{ Schurer1991a,
  author = "F. Schurer",
  title = "Het rekencentrum",
  editor = "M. Bakker and G. van Hoof",
  booktitle = "Gedenkboek Technische Universiteit Eindhoven, 1956--1991",
  address = "Eindhoven",
  year = "1991",
  pages = "91--103"
}

@article{ Besseling1957a,
  author = "J.F. Besseling",
  title = "Sterkte- en trillingsberekeningen voor de transsone windtunnel van het N.L.L. met behulp van elektronische rekenmachines",
  journal = "De Ingenieur",
  number = "42 (Luchtvaarttechniek 3)",
  year = "1957",
  pages = "17--23"
}

@article{ Aronsohn1960a,
  author = "A. Aronsohn",
  title = "Elektronische rekenmachine gebruikt voor civiel-technische doeleinden",
  journal = "De Ingenieur",
  number = "33 (Bouw- en waterbouwkunde 9)",
  year = "1960",
  pages = "91--100"
}

@article{ Kuijper1960a,
  author = "C.E.M. de Kuijper",
  title = "VII. Toepassing van de digitale rekenmachine bij het transformatorontwerp",
  journal = "De Ingenieur",
  number = "41 (Elektrotechniek 10)",
  year = "1960",
  pages = "115--119"
}

@article{ Verster1962a,
  author = "N.F. Verster and H.L. Hagedoorn",
  title = "Onderzoek van het magneetveld van een isochroon cyclotron",
  journal = "Philips Technisch Tijdschrift",
  number = "4/5",
  year = "1962",
  pages = "106--120"
}

@article{ Reynst1962a,
  author = "M.F. Reynst and W.Th. Langendam",
  title = "Berekening van luidsprekermagneten van ferroxdure",
  journal = "Philips Technisch Tijdschrift",
  number = "4/5",
  year = "1962",
  pages = "144--150"
}

@article{ Weber1962a,
  author = "C. Weber",
  title = "Het berekenen van potentiaalvelden en elektronenbanen met behulp van een elektronische rekenmachine",
  journal = "Philips Technisch Tijdschrift",
  number = "4/5",
  year = "1962",
  pages = "130--143"
}

@article{ Nijenhuis1962a,
  author = "W. Nijenhuis",
  title = "Rekengeluiden van de PASCAL",
  journal = "Philips Technisch Tijdschrift",
  number = "4/5",
  year = "1962",
  pages = "157--164"
}

@article{ Dekkers1962a,
  author = "A.J. Dekkers and A.J.W. Duijvestijn",
  title = "Het oplossen van een legpuzzel met de PASCAL",
  journal = "Philips Technisch Tijdschrift",
  number = "4/5",
  year = "1962",
  pages = "151--157"
}

@article{ Meerendonk1962a,
  author = "H.W. van den Meerendonk and J.H. Schouten",
  title = "De snijverliezen bij fabricage van golfkarton",
  journal = "Philips Technisch Tijdschrift",
  number = "4/5",
  year = "1962",
  pages = "121--129"
}

@incollection{ Ord1960a,
  author = "R.J. Ord-Smith",
  title = "The STANTEC-ZEBRA Simple Code and its Interpretation",
  booktitle = "Annual Review in Automatic Programming",
  editor = "R. Goodman",
  year = "1960",
  address = "Londen",
  volume = "1",
  pages = "146--168"
}

@article{ Dijkstra1957e,
  author = "E.W. Dijkstra",
  title = "A Method to Investigate Primality",
  journal = "Mathematical Tables and Other Aids to Computation",
  volume = "11",
  number = "59",
  month = jul,
  year = "1957",
  pages = "195--196"
}

@article{ PTTbedrijfsbandenPTERA1953a,
  title = "De wonderen zijn de wereld nog niet uit. Indienststelling van PTERA",
  journal = "PTT-bedrijfsbanden",
  number = "10",
  month = oct,
  year = "1953",
  pages = "295--297"
}

@article{ PTTbedrijfsbandenZEBRA1959a,
  title = "Van PTERA naar ZEBRA",
  journal = "PTT-bedrijfsbanden",
  number = "9",
  month = sep,
  year = "1959",
  pages = "268--269"
}

@article{ StudiebladPTT1959a,
  author = "J.H. Schuilenga",
  title = "Het Dr. Neher Laboratorium",
  journal = "Studieblad PTT",
  number = "7",
  month = jul,
  year = "1959",
  pages = "206--213"
}

@unpublished{ PTTjaarverslag1948,
  title = "Verslag van het staatsbedrijf der Posterijen, telegrafie en telefonie over het jaar 1948",
  institution = "Hoofdbestuur der Postrerijen, telegrafie en telefonie",
  address = "'s-Gravenhage",
  year = "1950"
}

@unpublished{ PTTjaarverslag1950,
  title = "Verslag van het staatsbedrijf der Posterijen, telegrafie en telefonie over het jaar 1950",
  institution = "Hoofdbestuur der Postrerijen, telegrafie en telefonie",
  address = "'s-Gravenhage",
  year = "1951"
}

@unpublished{ PTTjaarverslag1951,
  title = "Verslag van het staatsbedrijf der Posterijen, telegrafie en telefonie over het jaar 1951",
  institution = "Hoofdbestuur der Postrerijen, telegrafie en telefonie",
  address = "'s-Gravenhage",
  year = "1952"
}

@unpublished{ PTTjaarverslag1953,
  title = "Jaarverslag PTT 1953",
  institution = "Hoofdbestuur der Postrerijen, telegrafie en telefonie",
  address = "'s-Gravenhage",
  year = "1954"
}

@unpublished{ PTTjaarverslag1954,
  title = "Jaarverslag PTT 1954",
  institution = "Hoofdbestuur der Postrerijen, telegrafie en telefonie",
  address = "'s-Gravenhage",
  year = "1955"
}

@unpublished{ PTTjaarverslag1955,
  title = "Jaarverslag PTT 1955",
  institution = "Hoofdbestuur der Postrerijen, telegrafie en telefonie",
  address = "'s-Gravenhage",
  year = "1956"
}

@unpublished{ PTTjaarverslag1957,
  title = "Jaarverslag PTT 1957",
  institution = "Hoofdbestuur der Postrerijen, telegrafie en telefonie",
  address = "'s-Gravenhage",
  year = "1958"
}

@unpublished{ PTTjaarverslag1958,
  title = "Jaarverslag PTT 1958",
  institution = "Hoofdbestuur der Postrerijen, telegrafie en telefonie",
  address = "'s-Gravenhage",
  year = "1959"
}
@unpublished{ PTTArchief4103,
  title = "Nationaal Archief, Den Haag, Ministerie Verkeer en Waterstaat (NL-HANA), Staatsbedrijf der PTT 1955--1988, inventarisnummer 4103",
  shorttitle = "NL-HANA, Staatsbedrijf PTT, 1955-1988, inv.nr. 4103"
}

@unpublished{ PTTArchief9994,
  title = "Nationaal Archief, Den Haag, Ministerie Verkeer en Waterstaat (NL-HANA), Staatsbedrijf der PTT 1955--1988, inventarisnummer 9994",
  shorttitle = "NL-HANA, Staatsbedrijf PTT, 1955-1988, inv.nr. 9994"
}

@unpublished{ Smillie2002a,
  author = "Keith Smillie",
  title = "Stantec Zebra",
  year = "2002",
  url = "http://www.cs.ualberta.ca/~smillie/ComputerAndMe/Part17.html"
}

@unpublished{ STANTECZEBRA1961a,
  author = "Standard Telephones \& Cables Limited, (STC)",
  year = "1961",
  note = "brochure",
  title = "Stantec ZEBRA",
  url = "http://archive.computerhistory.org/resources/text/Standard/Stantec.Zebra.1961.102646082.pdf"
}

@unpublished{ STANTECZEBRA1957a,
  author = "Standard Telephones \& Cables Limited, (STC)",
  year = "1957",
  note = "brochure",
  title = "Stantec Zebra Electonic Digital Computer",
  url = "http://archive.computerhistory.org/resources/text/Standard/Standard.StantecZebra.1957.102646083.pdf"
}


@unpublished{ STANTECZEBRA1959a,
  author = "Standard Telephones \& Cables Limited, (STC)",
  title = "Stantec ZEBRA Electronic Digital Computer",
  note = "leaflet",
  year = "1959",
  url = "http://archive.computerhistory.org/resources/text/Standard/Standard.StantecZebraSpec.1959.102646084.pdf"
}

@unpublished{ STANTECZEBRA1958a,
  author = "Standard Telephones \& Cables Limited, (STC)",
  title = "Stantec Zebra Electronic Digital Computer",
  note = "leaflet",
  year = "1958",
  url = "http://archive.computerhistory.org/resources/text/Standard/Stantec.Zebra.1958.102646085.pdf"
}

@unpublished{ Kosten1955a,
  author = "L. Kosten",
  title = "Octrooi No. 75090: tweewaardig electronisch lootorgaan",
  shorttitle = "Tweewaardig electronisch lootorgaan",
  year = "1955",
  institution = "Staatsbedrijf der Posterijen, Telegrafie en Telefonie",
  note = "ingediend 18 december 1950, openbaar gemaakt op 16 november 1953, uitgegeven 15 juni 1954",
  url = "http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=GB742305&F=0&QPN=GB742305"

}

@unpublished{ Poel1958a,
  author = "W.L. van der Poel and H.H. Clement and J. Rice",
  title = "Patent Specification GB802,745: Improvements in or relating to Electrical Digital Computers",
  shorttitle = "Improvements in or relating to Electrical Digital Computers",
  year = "1958",
  institution = "Staatsbedrijf der Posterijen, Telegrafie en Telefonie, Standard Telephones and Cables Limited",
  note = "ingediend 23 december 1955, uitgegeven 8 october 1958",
  url = "http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=GB802745&F=0"
}

@unpublished{ JaarverslagNLL1957,
  title = "Verslag over het jaar 1957",
  author = "stichting Nationaal Luchtvaartlaboratorium",
  year = "1958",
  url = "http://www.nlrmuseum.nl/pdf/jaarverslagen/1957.pdf"
}

@book{ Wilson2000a,
  title = "Ferranti: A History Building a Family Business 1882 -- 1975",
  author = "J.F. Wilson",
  year = "2003",
  edition = "paperback editie 2003; eerste druk 2000",
  publisher = "Carnegie Publishing Ltd.",
  address = "Lancaster"
}

@unpublished{ Zweers200xa,
  author = "Onno Zweers and Erno Eskens and Lidy Zweers-de Ronde",
  title = "MIRACLE - Mokums Industrial Research Automatic Calculator for Laboratory and Engineering",
  shorttitle = "MIRACLE",
  note = "Website",
  year = "jaar onbekend",
  url = "http://www.xs4all.nl/~onnoz/miracle/"
}

@unpublished{ Eskens200xa,
  title = "Transcriptie interview met Lidy Zweers - de Ronde afgenomen door Erno Eskens",
  shorttitle = "Interview met Lidy Zweers - de Ronde",
  author = "Erno Eskens",
  year = "jaar onbekend",
  url = "http://www.xs4all.nl/~onnoz/miracle/index.html"
}

@unpublished{ Eskens200xb,
  title = "Transcriptie interview met Lidy Zweers - de Ronde afgenomen door Erno Eskens",
  shorttitle = "Interview met Lidy Zweers - de Ronde",
  author = "Erno Eskens",
  note = "transcriptie gemaakt door Wessel Zweers",
  year = "jaar onbekend",
  url = "http://www.xs4all.nl/~onnoz/miracle/extra/texts/transcriptie interview Lidy.txt"
}

@techreport{ Lunbeck195xa,
  author = "R.J. Lunbeck",
  title = "Programming manual for ``MIRACLE'' (a Ferranti mark I* computer)",
  shorttitle = "Programming manual for ``MIRACLE''",
  year = "onbekend jaar",
  number = "19848",
  institution = "Koninklijke/Shell -- laboratorium",
  address = "Amsterdam"
}

@techreport{ Lunbeck195xb,
  author = "R.J. Lunbeck",
  title = "Subroutines Library and Input Organisation for MIRACLE",
  year = "onbekend jaar",
  number = "34986",
  note = "2 delen",
  institution = "Koninklijke/Shell -- laboratorium",
  address = "Amsterdam"
}
@article{ Blachman1961a,
  author = "N.M. Blachman",
  title = "The State of Digital Computer Technology in Europe",
  journal = "Communications of the ACM",
  volume = "4",
  number = "6",
  month = jun,
  year = "1961",
  pages = "256--265"
}

@book{ Bliek1994a,
  author = "J.A. Bliek",
  title = "75 years of aerospace research in the Netherlands: a sketch of the National Aerospace Laboratory NLR 1919--1994",
  shorttitle = "a sketch of the National Aerospace Laboratory",
  year = "1994",
  publisher = "NLR",
  address = "Amsterdam",
  url = "http://www.nlrmuseum.nl/htm/contjb.htm"
}

@article{ Doorn2000a,
  author = "T. van Doorn",
  title = "De eerste heette schildpad",
  journal = "De Ingenieur",
  number = "1",
  year = "2000",
  pages = "40--41",
  url = "http://www.deingenieur.nl/artikelDetail.lasso?ID=5629&-session=NTses:5C23B14EC125EBF653E2C5308966A8DF"
}

@phdthesis{ Dael2001a,
  author = "R.L.H. van Dael",
  title = "`Iets met computers'. Over de beroepsvorming van de informaticus",
  year = "2001",
  school = "Katholieke Universiteit Nijmegen",
  url = "http://webdoc.ubn.kun.nl/mono/d/dael_r_van/ietsmeco.pdf"
}

@article{ Ende2002a,
  author = "J. van den Ende and E. van Oost and J. Schot and O. de Wit",
  title = "Innovation Junctions. Office Technologies in the Netherlands, 1880--1980",
  shorttitle = "Office Technologies in the Netherlands",
  journal = "Technology and Culture",
  volume = "43",
  year = "2002",
  pages = "50--72"
}

@unpublished{ Electrologica196xa,
  title = "De elektronische rekenautomaat X1",
  organization = "Electrologica",
  address = "Den Haag",
  url  = "http://kmt.hku.nl/~hans/pdf_files/elx1-a.pdf"
}

@unpublished{ Electrologica196xb,
  title = "Het lees- en ponsaggregaat",
  organization = "Electrologica",
  address = "Den Haag",
  url  = "http://kmt.hku.nl/~hans/pdf_files/elx1-b.pdf"
}

@unpublished{ Electrologica196xc,
  title = "Electrologica ELX-series. General Description",
  organization = "Electrologica",
  address = "Rijswijk",
  url  = "http://kmt.hku.nl/~hans/pdf_files/electrologica-engl.pdf"
}

@techreport{ Kaptein1957a,
  author = "E. Kaptein",
  title = "Electronische berekeningen met behulp van de ARMAC",
  institution = "Econometrisch Instituut (Nederlandsche Economische Hoogeschool)",
  year = "1957",
  number = "5709"
}

@article{ Loopstra1959a,
  author = "B.J. Loopstra",
  title = "The X-1 Computer",
  journal = "The Computer Journal",
  year = "1959",
  volume = "2",
  number = "1",
  pages = "39--43"
}

@article{ Wit1997a,
  author = "D. de Wit",
  title = "The Construction of the Dutch Computer Industry: The Organisational Shaping of Technology",
  shorttitle = "The Construction of the Dutch Computer Industry",
  journal = "Business History",
  volume = "39",
  number = "3",
  year = "1997",
  pages = "81--104"
}

@techreport{ Kruseman2003a,
  author = "F.E.J. Kruseman Aretz",
  title = "The Dijkstra-Zonneveld ALGOL 60 compiler for the Electrologica X1",
  institution = "CWI",
  year = "2003",
  number = "SEN-N0301",
  note = "historical note SEN, 2",
  url = "http://ftp.cwi.nl/CWIreports/SEN/SEN-N0301.pdf"
}

@unpublished{ Kruseman2006a,
  author = "F.E.J. Kruseman Aretz",
  title = "Progress in ALGOL 60 implementation: two successive MC systems compared",
  year = "2006",
  url = "http://www.win.tue.nl/~hemerik/2R930/Materiaal/5_Netherlands/ALGOL60_implementation.pdf"
}

@article{ Dijkstra1960b,
  author = "E.W. Dijkstra",
  title = "Verslag van de voordracht door Dr E.W. Dijkstra, gehouden op 11 december 1959. De faciliteit tot interruptie in de X1",
  shorttitle = "De faciliteit tot interruptie in de X1",
  year = "1960",
  journal = "Mededelingen van het Rekenmachinegenootschap",
  volume = "2",
  number  = "1",
  month = feb,
  pages = "3--8"
}

@article{ Poel1960a,
  author = "W.L. van der Poel",
  title = "Verslag van de voordracht door Dr Ir W.L. van der Poel, gehouden op 23 april 1960. Testprograms",
  shorttitle = "Testprograms",
  year = "1960",
  journal = "Mededelingen van het Rekenmachinegenootschap",
  volume = "2",
  number  = "2",
  month = aug,
  pages = "3--8"
}

@phdthesis{ Oost1994a,
  author = "E.C.J. van Oost",
  title = "Nieuwe functies, nieuwe verschillen. Genderprocessen in de constructie van de nieuwe automatiseringsfuncties 1955--1970",
  shorttitle = "Nieuwe functies, nieuwe verschillen",
  year = "1994",
  school = "Universiteit Twente",
  publisher = "Eburon",
  address = "Delft"
}

@article{ Informatie1959a,
  title = "Enkele gegevens met betrekking tot geplaatste en bestelde machines",
  journal = "Informatie",
  year = "1959",
  number = "2",
  month = may,
  pages = "7--8"
}

@article{ Informatie1959b,
  title = "Oprichting Nederlands Rekenmachine Genootschap",
  journal = "Informatie",
  year = "1959",
  number = "3",
  month = jul,
  pages = "5"
}

@article{ Informatie1959c,
  title = "Enkele gegevens met betrekking tot geplaatste en bestelde machines",
  journal = "Informatie",
  year = "1959",
  number = "3",
  month = jul,
  pages = "11"
}

@article{ Informatie1959d,
  title = "K.L.M. neemt een I.B.M. 705 in gebruik",
  journal = "Informatie",
  year = "1959",
  number = "5",
  month = dec,
  pages = "6--7"
}

@article{ Informatie1959e,
  title = "Enkele gegevens met betrekking tot geplaatste en bestelde machines",
  journal = "Informatie",
  year = "1959",
  number = "5",
  month = dec,
  pages = "8--9"
}

@article{ Schroeff1960a,
  author = "H.J. van der Schroeff",
  titel = "Een nieuwe loot aan de stam van het Studiecentrum",
  journal = "Informatie",
  year = "1960",
  number = "6",
  month = apr,
  pages = "1"
}

@article{ Informatie1960a,
  title = "Oprichting van de Vereniging ``Genootschap Studiecentrum voor Administratieve Automatisering''",
  journal = "Informatie",
  year = "1960",
  number = "6",
  month = apr,
  pages = "3"
}

@article{ Informatie1960b,
  title = "Cursus programmeurs",
  journal = "Informatie",
  year = "1960",
  number = "6",
  month = apr,
  pages = "4"
}

@article{ Informatie1960c,
  title = "Eerste Nederlandsche neemt een X-1 in gebruik",
  journal = "Informatie",
  year = "1960",
  number = "6",
  month = apr,
  pages = "12--13"
}

@article{ Informatie1960d,
  title = "Enkele gegevens met betrekking tot geplaatste en bestelde machines",
  journal = "Informatie",
  year = "1960",
  number = "8",
  month = jul,
  pages = "16"
}

@article{ Informatie1961a,
  title = "Commissie ALGOL-COBOL",
  journal = "Informatie",
  year = "1961",
  number = "13",
  month = apr,
  pages = "5"
}

@article{ Informatie1961b,
  title = "COBOL -- 1961",
  journal = "Informatie",
  year = "1961",
  number = "16",
  month = nov,
  pages = "9--10"
}

@article{ Informatie1961c,
  title = "Overzicht van in Nederland per 1 oktober 1961 geplaatste en in bestelling zijnde computers",
  journal = "Informatie",
  year = "1961",
  number = "17",
  month = dec,
  pages = "16"
}

@article{ Informatie1962a,
  title = "Vorming van een programmeurskring",
  journal = "Informatie",
  year = "1962",
  number = "19",
  month = apr,
  pages = "4"
}

@article{ Rotmans1962a,
  author = "J. Rotmans",
  title = "Rondom de administratieve automatisering",
  journal = "Informatie",
  year = "1962",
  number = "19",
  month = apr,
  pages = "10--12"
}

@article{ Informatie1962b,
  title = "Opheffing van de Holland branch of the British Computer Society",
  journal = "Informatie",
  year = "1962",
  number = "20",
  month = jun,
  pages = "11"
}

@article{ Bruijn1962a,
  author = "W.K. de Bruijn",
  title = "Praktijkervaringen met administratieve automatisering",
  journal = "Informatie",
  year = "1962",
  number = "20",
  month = jun,
  pages = "18--20"
}

@article{ Informatie1962c,
  title = "ALGOL-COBOL-commissie",
  journal = "Informatie",
  year = "1962",
  number = "21",
  month = jul,
  pages = "3--6"
}

@article{ Bruijn1963a,
  author = "W.K. de Bruijn",
  title = "Praktijkervaringen met administratieve automatisering II",
  journal = "Informatie",
  year = "1963",
  number = "24",
  month = jan,
  pages = "16--19"
}

@article{ Bruijn1963b,
  author = "W.K. de Bruijn",
  title = "Praktijkervaringen met administratieve automatisering III",
  journal = "Informatie",
  year = "1963",
  number = "25",
  month = mrt,
  pages = "14--18"
}

@article{ Wijngaarden1963a,
  author = "A. van Wijngaarden",
  title = "Zestien jaar rekenmachineresearch in Nederland",
  journal = "Informatie",
  year = "1963",
  number = "27",
  month = jul,
  pages = "25--26"
}

@article{ Kosten1963a,
  author = "L. Kosten",
  title = "Twee decennia rekenautomaten",
  journal = "Informatie",
  year = "1963",
  number = "27",
  month = jul,
  pages = "27--28"
}

@article{ Poel1963a,
  author = "W.L. van der Poel",
  title = "Sera, een machine voor studiedoeleinden",
  journal = "Informatie",
  year = "1963",
  number = "27",
  month = jul,
  pages = "41--42"
}

@article{ Bruijn1964a,
  author = "W.K. de Bruijn",
  title = "Computers in de Benelux",
  journal = "Informatie",
  year = "1964",
  number = "30",
  month = jan,
  pages = "2--3"
}

@article{ Informatie1964a,
  title = "Vijf jaar Nederlands Rekenmachine Genootschap",
  journal = "Informatie",
  year = "1964",
  number = "33",
  month = apr,
  pages = "7--8"
}

@article{ Fleurbaaij1964a,
  author = "P.F. Fleurbaaij",
  title = "Software",
  journal = "Informatie",
  year = "1964",
  number = "36",
  month = jul,
  pages = "2--7"
}

@article{ Oorschot1964a,
  author = "J.M. van Oorschot",
  title = "Kritische computerkeuze",
  journal = "Informatie",
  year = "1964",
  number = "36",
  month = jul,
  pages = "8--11"
}

@article{ Informatie1964b,
  title = "Karakteristieken van de productieregeling en de gegevensverwerking bij een walserij",
  journal = "Informatie",
  year = "1964",
  number = "39",
  month = dec,
  pages = "6--11"
}

@book{ Reinoud1966a,
  editor = "H. Reinoud and G.J. Hennephof and F.J.E. Hogewind and J.M. van Oorschot",
  title = "Automatisering en overheid. Computertoepassingen in de Rijksdienst, bij PTT, Spoorwegen en Staatsmijnen",
  shorttitle = "Automatisering en overheid",
  year = "1966",
  address = "Utrecht"
}

@article{ Reenalda1957a,
  author = "C. Reenalda",
  title = "Loonadministratie met gebruikmaking van elektronische apparatuur",
  journal = "Tijdschrift voor Efficiency en Documentatie",
  volume = "27",
  year = "1957",
  number = "9",
  pages = "299--304"
}

@phdthesis{ Wit1994a,
  author = "D. de Wit",
  title = "The shaping of automation. A historical analysis of the interaction between technology and organization, 1950--1985",
  shorttitle = "The shaping of automation",
  year = "1994",
  school = "Erasmus Universiteit Rotterdam",
  address = "Hilversum",
  publisher = "Verloren"
}

@unpublished{ Dijkstra1993a,
  author = "E.W. Dijkstra",
  title = "From my life",
  year = "1993",
  note = "EWD1166",
  url = "http://www.cs.utexas.edu/users/EWD/ewd11xx/EWD1166.PDF"
}

@incollection{ Dijkstra1980a,
  author = "E.W. Dijkstra",
  title = "A programmer's early memories",
  booktitle = "A History of Computing in the Twentieth Century: a Collection of Essays",
  editor = "N. Metropolis and J. Howlett and G. Rota",
  year = "1980",
  publisher = "Academic Press",
  address = "New York",
  pages = "563--573",
  note = "EWD568",
  url = "http://www.cs.utexas.edu/users/EWD/ewd05xx/EWD568.PDF"
}

@unpublished{ Dijkstra2001a,
  author = "E.W. Dijkstra",
  title = "What led to ``Notes on Structured Programming''",
  year = "2001",
  note = "EWD1308",
  url = "http://www.cs.utexas.edu/users/EWD/ewd13xx/EWD1308.PDF"
}

@unpublished{ Dijkstra2000a,
  author = "E.W. Dijkstra",
  title = "My recollections of operating system design",
  year = "2000",
  note = "EWD1303",
  url = "http://www.cs.utexas.edu/users/EWD/ewd13xx/EWD1303.PDF"
}

@book{ Ende1991a,
  author = "J. van den Ende",
  title = "Knopen, kaarten en chips : de geschiedenis van de automatisering bij het Centraal Bureau voor de Statistiek",
  shorttitle = "Knopen, kaarten en chips",
  year = "1991",
  publisher = "CBS",
  address = "Voorburg"
}

@incollection{ Kellenbach1999a,
  author = "F.M. Kellenbach",
  title = "Mechanisering en automatisering",
  booktitle = "Een eeuw statistieken : historisch-methodologische schetsen van de Nederlandse officiële statistieken in de twintigste eeuw",
  editor = "B. Erwich and J.G.S.J. van Maarseveen",
  url = "http://www.cbs.nl/nl-NL/menu/organisatie/geschiedenis/overzicht/1999-eeneeuwstatistieken-pub.htm",
  year = "1999",
  pages = "71--104"
}

@techreport{ Poel1952c,
  author = "W.L. van der Poel",
  title = "Het programmeren voor de PTERA",
  number = "12 MA",
  year = "1952",
  institution = "Centraal Laboratorium PTT"
}

@incollection{ Wit1988a,
  author = "D. de Wit",
  title = "De automatisering van de postcheque- en girodienst",
  booktitle = "Historie van de automatisering in Nederland. Inventaiserende studie als aanzet tot een landelijk historisch documentatiecentrum",
  editor = "J.M. van Oorschot",
  publisher = "NGI",
  year = "1988",
  pages = "20--34"
}

@book{ Bruijn1964b,
  author = "W.K. de Bruijn",
  title = "15 facetten van administrative automatisering. Een samenvatting van praktijkervaringen bij het gebruik van computers voor de bestuurlijke informatieverwerking",
  shorttitle = "15 facetten van administrative automatisering",
  publisher = "N. Samsom",
  address = "Alphen aan den Rijn",
  year = "1964"
}

@article{ Reinoud1956a,
 author = "H. Reinoud",
 title = "Over de produktie en toepassing van elektronische administratiemachines",
 journal = "Economisch-statistische berichten",
 volume = "41",
 number = "2020",
 year = "1956",
 pages = "193--196"
}

@article{ EconStatBerichten1956a,
 title = "Automation van de administratie",
 journal = "Economisch-statistische berichten",
 volume = "41",
 number = "2050",
 year = "1956",
 pages = "873--874"
}

@article{ Reinoud1957a,
 author = "H. Reinoud",
 title = "De recente ontwikkeling van elektronische administratiemachines",
 journal = "Economisch-statistische berichten",
 volume = "42",
 number = "2098",
 year = "1957",
 pages = "728--732"
}

@article{ Kosten1957a,
 author = "L. Kosten",
 title = "Wat is automatisering?",
 journal = "Economisch-statistische berichten",
 volume = "42",
 number = "2103",
 year = "1957",
 pages = "831"
}

@article{ Wijngaarden1957a,
 author = "A. van Wijngaarden",
 title = "Automatisering in de wetenschap",
 journal = "Economisch-statistische berichten",
 volume = "42",
 number = "2103",
 year = "1957",
 pages = "832-833"
}

@article{ Swaab1957a,
 author = "S. Swaab",
 title = "De stand van de automatisering van de administratie in Nederland",
 journal = "Economisch-statistische berichten",
 volume = "42",
 number = "2103",
 year = "1957",
 pages = "834--837"
}

@article{ Engelfriet1957a,
 author = "J. Engelfriet",
 title = "Automatiseren en verzekering",
 journal = "Economisch-statistische berichten",
 volume = "42",
 number = "2103",
 year = "1957",
 pages = "839--841"
}

@article{ Reinoud1957b,
 author = "H. Reinoud",
 title = "Een Nederlandse industrie van elektronische reken- en administratiemachines?",
 journal = "Economisch-statistische berichten",
 volume = "42",
 number = "2103",
 year = "1957",
 pages = "843--845"
}

@article{ Reinoud1958a,
 author = "H. Reinoud",
 title = "Problemen en ervaringen rond de invoering van elektronische administratiemachines (I)",
 journal = "Economisch-statistische berichten",
 volume = "43",
 number = "2116",
 year = "1958",
 pages = "67--70"
}

@article{ Reinoud1958b,
 author = "H. Reinoud",
 title = "Problemen en ervaringen rond de invoering van elektronische administratiemachines (II)",
 journal = "Economisch-statistische berichten",
 volume = "43",
 number = "2117",
 year = "1958",
 pages = "91--95"
}

@article{ Reinoud1960a,
 author = "H. Reinoud",
 title = "De huidige stand van zaken met betrekking tot de administratieve automatisering (I)",
 journal = "Economisch-statistische berichten",
 volume = "45",
 number = "2234",
 year = "1960",
 pages = "508--511"
}

@article{ Reinoud1960b,
 author = "H. Reinoud",
 title = "De huidige stand van zaken met betrekking tot de administratieve automatisering (II)",
 journal = "Economisch-statistische berichten",
 volume = "45",
 number = "2235",
 year = "1960",
 pages = "530--532"
}

@article{ Reinoud1960c,
 author = "H. Reinoud",
 title = "De huidige stand van zaken met betrekking tot de administratieve automatisering (III)",
 journal = "Economisch-statistische berichten",
 volume = "45",
 number = "2236",
 year = "1960",
 pages = "555-557"
}

@unpublished{ MCArchief,
  title = "Rijksarchief in Noord-Holland, Archief van de Stichting Mathematisch Centrum (RAHN, SMC), 1946--1980",
  shorttitle = "RAHN, SMC"
}

@unpublished{ MCArchiefB,
  title = "Rijksarchief in Noord-Holland, Archief van de Stichting Mathematisch Centrum (RAHN, SMC), 1946--1980",
  shorttitle = "RAHN, SMC"
}

@book{ X1Kantoormachinegids1958a,
  title = "X1 elektronische rekenmachine. Overdruk uit De Kantoormachinegids november 1958",
  shorttitle = "X1 elektronische rekenmachine",
  year = "1958",
  note = "Rijksarchief in Noord-Holland, Archief van de Stichting Mathematisch Centrum, 1946--1980, inv.nr. 51"
}

@techreport{ Electrologica1958a,
  author = "N.V. Electrologica",
  title = "Korte algemene beschrijving van de elektronische rekenmachine X1 (EL-3)",
  publisher = "N.V. Electrologica",
  address = "'s-Gravenhage",
  number = "EL-3",
  year = "1958",
  note = "Rijksarchief in Noord-Holland, Archief van de Stichting Mathematisch Centrum, 1946--1980, inv.nr. 51"
}

@book{ Electrologica1959a,
  author = "N.V. Electrologica",
  title = "X 1 STANDAARDDPROGRAMMA voor klassen 6 en 7 (EL 5)",
  publisher = "N.V. Electrologica",
  address = "'s-Gravenhage",
  year = "1959",
  note = "Rijksarchief in Noord-Holland, Archief van de Stichting Mathematisch Centrum, 1946--1980, inv.nr. 51"
}

@book{ Electrologica1965a,
  author = "N.V. Electrologica",
  title = "Electrologica EL elektronische informatieverwerkende systemen ELX3, ELX5",
  publisher = "N.V. Electrologica",
  address = "'s-Gravenhage",
  year = "1965",
  note = "Rijksarchief in Noord-Holland, Archief van de Stichting Mathematisch Centrum, 1946--1980, inv.nr. 52"
}

@book{ Electrologica1965b,
  author = "N.V. Electrologica",
  title = "Electrologica EL elektronische informatieverwerkende systemen ELX2, ELX3, ELX4, ELX5",
  publisher = "N.V. Electrologica",
  address = "'s-Gravenhage",
  year = "1965",
  note = "Rijksarchief in Noord-Holland, Archief van de Stichting Mathematisch Centrum, 1946--1980, inv.nr. 52"
}

@unpublished{ Electrologica1956a,
  title = "Overeenkomst tussen Electrologica en Stichting Mathematisch Centrum, 25 juni 1956",
  year = "1956",
  note = "Rijksarchief in Noord-Holland, Archief van de Stichting Mathematisch Centrum, 1946--1980, inv.nr. 52"
}

@unpublished{ Wijngaarden1955a,
  author = "A. van Wijngaarden",
  title = "ARRA, FERTA, ARMAC, AERA. Verslag van machines met het oog op Curatorenvergadering van 15 april 1955",
  shorttitle = "ARRA, FERTA, ARMAC, AERA",
  year = "1955",
  note = "Rijksarchief in Noord-Holland, Archief van de Stichting Mathematisch Centrum, 1946--1980, inv.nr. 91"
}


@article{ Muhring1958a,
  author = "W.J. Muhring",
  title = "Ontwikkeling van de automatisering bij de Rijksadministratie",
  journal = "Tijdschrift voor Efficiency en Documentatie",
  volume = "28",
  number = "9",
  year = "1958",
  pages = "357--359"
}

@article{ Euwe1960a,
  author = "M. Euwe",
  title = "Automatisering van een verzekeringsbedrijf",
  journal = "Tijdschrift voor Efficiency en Documentatie",
  volume = "30",
  number = "5",
  year = "1960",
  pages = "233--234"
}

@article{ Bunschoten1960a,
  author = "H.W. Bunschoten and F.G.D. Meijer",
  title = "Automatisering in een textielverdelingsbedrijf",
  journal = "Tijdschrift voor Efficiency en Documentatie",
  volume = "30",
  number = "9",
  year = "1960",
  pages = "465--468"
}

@article{ Uitert1960a,
  author = "C. van Uitert",
  title = "Adminsitratieve automatisering",
  journal = "Tijdschrift voor Efficiency en Documentatie",
  volume = "30",
  number = "11",
  year = "1960",
  pages = "625--628"
}

@unpublished{ Frana2001a,
  editor = "P.L. Frana",
  title = "An interview with Edsger W. Dijkstra conducted by Philip L. Frana on August 2, 2001 Austing, TX",
  shorttitle = "An interview with Edsger W. Dijkstra",
  year = "2001",
  institution = "Charles Babbage Institute",
  note  = "OH 330",
  url = "http://www.cbi.umn.edu/oh/pdf.phtml?id=296"
}

@article{ Smit1965a,
  author = "J. Smit",
  title = "I. Inleiding",
  journal = "De Ingenieur",
  number = "Algemeen 7",
  year = "1965",
  note = "Artikel in de serie `De computer in het arbeidsveld van de ingenieur'",
  pages = "91"
}

@article{ Oberman1965a,
  author = "R.M.M. Oberman",
  title = "II.  Wat is een computer, welke soorten bestaan er; wat kan de computer en wat niet; wat zijn de te verwachten ontwikkelingen",
  journal = "De Ingenieur",
  number = "Algemeen 7",
  year = "1965",
  note = "Artikel in de serie `De computer in het arbeidsveld van de ingenieur'",
  pages = "91--101"
}

@article{ Nielen1965a,
  author = "G.C. Nielen",
  title = "III. De computer als hulpmiddel bij het ontwerp, de research, de procesbesturing, het bedrijfsbeheer, de besluitvorming en vele andere mogelijkheden",
  journal = "De Ingenieur",
  number = "Algemeen 8",
  year = "1965",
  note = "Artikel in de serie `De computer in het arbeidsveld van de ingenieur'",
  pages = "109--115"
}

@article{ Ingenieur1965a,
  title = "IV. Korte referaten over praktische toepassingen",
  journal = "De Ingenieur",
  number = "Algemeen 10",
  year = "1965",
  note = "Artikel in de serie `De computer in het arbeidsveld van de ingenieur",
  pages = "139--144"
}

@book{ Bruijn1963c,
  author =  "W.K. de Bruijn and A.B. Frielink and B. Scheepmaker",
  title = "Ontwikkeling computermarkt. Administratieve automatisering in de EEG. Stand en ontwikkeling van de toepassing van elektronische informatieverwerkende apparatuur in de EEG in vergelijking met de V.S.",
  shorttitle = "Ontwikkeling computermarkt",
  year = "1963",
  publisher = "SSAA",
  address = "Amsterdam"
}

@book{ SSAA1963a,
  author = "SSAA",
  title = "Bezettingsgraad ponskaarten- en rekencentra",
  year = "1963",
  publisher = "SSAA",
  address = "Amsterdam"
}

@book{ Mulder1959a,
  author = "J.F. Mulder and J.M. van Oorschot",
  title = "Grondslagen van de administratieve automatisering",
  year = "1959",
  publisher = "Vuga-boekerij",
  address = "Arnhem"
}

@article{ Reenalda1957b,
  author = "C. Reenalda",
  title = "Automatie",
  journal = "Tijdschrift der Nederlandsche Heidemij",
  volume = "68",
  number = "5",
  year = "1957",
  pages = "123--128"
}

@incollection{ Statius1963a,
  author = "A.L. Statius Muller",
  title = "Gemeenschappelijk gebruik van de computer I",
  booktitle = "Levensverzekering en autoamtisering. Overdruk van een serie artikelen, verschenen in De Verzekeringsbode officieel orgaan van de Nederlandse Vereniging ter Bevordering van het Levensverzekeringswezen",
  year = "1963",
  address = "Utrecht",
  pages = "23--25"
}

@unpublished{ Poel2007a,
  title = "Interview met W.L. van der Poel gehouden op 17 juli 2007 door G. Alberts en H.T. de  ",
  shorttitle = "Interview met W.L. van der Poel",
  year = "2007"
}

@article{ Reenalda1961a,
  author = "C. Reenalda",
  title = "Automatische informatieverwerking. Enige beschouwingen over opgedane ervaringen",
  journal = "Tijdschrift voor Efficiency en Documentatie",
  volume = "31",
  number = "3",
  year = "1961",
  pages = "125--127"
}

@article{ Ballegooyen1962a,
  author = "A. van Ballegooyen",
  title = "Nieuwe elektronische rekenapparatuur bij Unilever n.v., Rotterdam",
  journal = "Tijdschrift voor Efficiency en Documentatie",
  volume = "32",
  number = "5",
  year = "1962",
  pages = "271--275"
}

@article{ Gooyer1962a,
  author = "C.F. de Gooyer",
  title = "Bezettingsplanning en voorraadbeheersing met behulp van elektronische informatieverwerkende apparatuur",
  journal = "Tijdschrift voor Efficiency en Documentatie",
  volume = "32",
  number = "3",
  year = "1962",
  pages = "117--121"
}

@article{ Mil1962a,
  author = "A. van Mil",
  title = "Electronische loonadministratie als dienstverlening aan het bedrijfsleven",
  journal = "Tijdschrift voor Efficiency en Documentatie",
  volume = "32",
  number = "10",
  year = "1962",
  pages = "550--553"
}

@article{ Veldhuis1962a,
  author = "W. Veldhuis and J. van Zanden",
  title = "De automatisering der informatieverwerking",
  journal = "Tijdschrift voor Efficiency en Documentatie",
  volume = "32",
  number = "12",
  year = "1962",
  pages = "713--716"
}

@article{ Uitert1963a,
  author = "C. van Uitert",
  title = "Een geval van automatisering in de praktijk",
  journal = "Tijdschrift voor Efficiency en Documentatie",
  volume = "33",
  number = "6",
  year = "1963",
  pages = "298--303"
}

@article{ Oorschot1963a,
  author = "J.M. van Oorschot",
  title = "Ponskaart of magnetische band?",
  journal = "Tijdschrift voor Efficiency en Documentatie",
  volume = "33",
  number = "6",
  year = "1963",
  pages = "318--323"
}

@article{ Bashe1981a,
  author = "C.J. Bashe and W. Buchholz and G.V. Hawkins and J.J. Ingram and N. Rochester",
  title = "The architecture of IBM's early computers",
  journal = "IBM Journal of Research and Development",
  volume = "25",
  number = "5",
  year = "1981",
  pages = "363--375"
}

@article{ Kraak2000a,
  author = "J. Kraak",
  title = "Een dag te midden van computerpioniers",
  journal = "Pictrogram",
  number = "2",
  year = "2000",
  url = "http://www.rug.nl/cit/organisatie/pictogram/archief/2000-5-2/pioniers.htm"
}

@article{ Kraak2001a,
  author = "J. Kraak",
  title = "Pioniers van de ZEBRA",
  journal = "Pictrogram",
  number = "1",
  year = "2001",
  url = "http://www.rug.nl/cit/organisatie/pictogram/archief/2001-01/computerpioniers.htm"
}

@unpublished{ RUG2005a,
  title = "Het begin van het Rekencentrum",
  url = "http://www.rug.nl/cit/organisatie/rc/geschiedenis/beginrc",
  year = "2005"
}

@article{ Kosten1956c,
  author = "L. Kosten and R.M.M. Oberman and H. Reinoud",
  title = "Enige aspecten van de elektronische verwerking van administratieve gegevens",
  journal = "De Accountant",
  volume = "63",
  number = "1",
  pages = "5--49",
  note = "Praeadvies Accountantsdag 29 September 1956"
}

@incollection{ Gribnau1966a,
  author = "J.L.M. Gribnau",
  title = "Ervaringen van de Staatsmijnen bij de invoering van een grote computer met multiprogrammering (Univac III)",
  booktitle = "Automatisering en overheid. Computertoepassingen in de Rijksdienst, bij PTT, Spoorwegen en Staatsmijnen",
  editor = "H. Reinoud and G.J. Hennephof and F.J.E. Hogewind and J.M. van Oorschot",
  year = "1966",
  address = "Utrecht",
  pages = "270--282"
}

@incollection{ Uitert1966a,
  author = "C. van Uitert",
  title = "De automatisering der verwerking van bestuurlijke informatie bij het NS-concern",
  booktitle = "Automatisering en overheid. Computertoepassingen in de Rijksdienst, bij PTT, Spoorwegen en Staatsmijnen",
  editor = "H. Reinoud and G.J. Hennephof and F.J.E. Hogewind and J.M. van Oorschot",
  year = "1966",
  address = "Utrecht",
  pages = "224--253"
}

@article{ Engelfriet1956a,
  author = "J. Engelfriet",
  title = "Levensverzekeringsbedrijf automatiseert. Eerst: analyse der administratie",
  journal = "Elseviers weekblad",
  number = "Zaterdag 20 oktober",
  year = "1956"
}

@article{ Engelfriet1956b,
  author = "J. Engelfriet",
  title = "Levensverzekering voor nieuwe techniek",
  journal = "Elseviers weekblad",
  number = "Zaterdag 27 oktober",
  year = "1956"
}

@article{ Engelfriet1956c,
  author = "J. Engelfriet",
  title = "De sociale gevolgen van de automatisering",
  journal = "Elseviers weekblad",
  number = "Zaterdag 3 november",
  year = "1956"
}

@phdthesis{ Kosten1942a,
  author = "L. Kosten",
  title = "Over blokkeerings- en wachtproblemen",
  school = "Technische Hogeschool Delft",
  address = "Delft",
  year = "1942"
}

@article{ Engelfriet1957b,
  author = "J. Engelfriet",
  title = "Automatiseren en verzekering",
  journal = "De Verzekeringsbode",
  volume = "76",
  number = "40",
  year = "1957",
  pages = "266--268",
  note = "Voordracht van Prof. Dr. J. Engelfriet, gehouden op de Verzekeringsdag van 28 september 1957 te Scheveningen (Deel I)"
}

@article{ Engelfriet1957c,
  author = "J. Engelfriet",
  title = "Automatiseren en verzekering",
  journal = "De Verzekeringsbode",
  volume = "76",
  number = "41",
  year = "1957",
  pages = "273-275",
  note = "Voordracht van Prof. Dr. J. Engelfriet, gehouden op de Verzekeringsdag van 28 september 1957 te Scheveningen (Deel II)"
}

@article{ Engelfriet1957d,
  author = "J. Engelfriet",
  title = "Automatiseren en verzekering",
  journal = "De Verzekeringsbode",
  volume = "76",
  number = "42",
  year = "1957",
  pages = "277--278",
  note = "Voordracht van Prof. Dr. J. Engelfriet, gehouden op de Verzekeringsdag van 28 september 1957 te Scheveningen (Deel III)"
}

@article{ DeVerzekeringsbode1959a,
  title = "Automatisering van de administratie",
  journal = "De Verzekeringsbode",
  volume = "78",
  number = "46",
  year = "1959",
  pages = "292"
}

@article{ DeVerzekeringsbode1960a,
  title = "Ingebruikneming computor bij de Vesta",
  journal = "De Verzekeringsbode",
  volume = "79",
  number = "44",
  year = "1960",
  pages = "246--247"
}

@article{ Troye1959a,
  author = "N.C. de Troye",
  title = "Classification and minimization of switching functions",
  journal = "Philips Research Reports",
  year = "1959",
  pages = "151--193 + 150--192"
}

@article{ Heyn1960a,
  author = "H.J. Heijn",
  title = "Representations of switching functions and their application to computers",
  journal = "Philips Research Reports",
  year = "1960",
  pages = "305--341"
}

@article{ Duijvestijn1961a,
  author = "A.J.W. Duijvestijn",
  title = "Electronic computation of squared rectangles",
  journal = "Philips Research Reports",
  year = "1961",
  pages = "523--613"
}

@book{ Stuijvenberg1963a,
  author =  "J.H. van Stuijvenberg",
  title = "De Nederlandsche Economische Hoogeschool, 1913-1963 : van handelshoogeschool naar hogeschool voor maatschappijwetenschappen",
  shorttitle = "De Nederlandsche Economische Hoogeschool, 1913-1963",
  year = "1963",
  publisher = "Nijgh \& Van Ditmar",
  address = "Rotterdam"
}

@book{ Gales1986a,
  author = "B.P.A. Gales",
  title = "Werken aan zekerheid : een terugblik over de schouder van AEGON op twee eeuwen verzekeringsgeschiedenis",
  shorttitle = "Werken aan zekerheid",
  year = "1986",
  publisher = "AEGON Verzekeringen",
  address = "'s-Gravenhage"
}

@book{ Gerwen1995a,
  author = "J.L.J.M. van Gerwen and N.H.W. Verbeek",
  title = "Voorzorg \& de vruchten : het verzekeringsconcern AMEV: zijn wortels en vertakkingen van 1847 tot 1995",
  shorttitle = "Voorzorg \& de vruchten",
  year = "1995",
  uitgever = "NEHA",
  address = "Amsterdam"
}

@book{ Adriaanse1994a,
  author = "P. Adriaanse",
  title = "Op weg naar Delta Lloyd : `een boek over mensen'",
  shorttitle = "Op weg naar Delta Lloyd",
  year = "1994",
  publisher = "Delta Lloyd Verzekeringsgroep",
  address = "Amsterdam"
}

@techreport{ SSAA1959a,
  author = "SSAA",
  title = "Toepassingsonderzoek no. 1: Nederlandsche Heidemaatschappij",
  year = "1959",
  institution = "SSAA",
  address = "Amsterdam"
}

@proceedings{ UNESCO1959a,
  institution = "UNESCO",
  title = "Information processing : proceedings of the International conference on information processing, Unesco, Paris 15-20 June 1959",
  shorttitle = "Information processing",
  year = "1959"
}

@inproceedings{ Loopstra1959b,
  author = "B.J. Loopstra",
  title = "Input and output in the X-1 system",
  booktitle = "Information processing : proceedings of the International conference on information processing, Unesco, Paris 15-20 June 1959",
  year = "1959",
  pages = "342--344"
}

@inproceedings{ Poel1959b,
  author = "W.L. van der Poel",
  title = "ZEBRA, a simple binary computer",
  booktitle = "Information processing : proceedings of the International conference on information processing, Unesco, Paris 15-20 June 1959",
  year = "1959",
  pages = "361--365"
}

@inproceedings{ Dijkstra1964a,
  author = "E.W. Dijkstra",
  title = "Over de beperkte omvang van ons rekentuig",
  booktitle = "NRMG 1959-1964 : voordrachten gehouden op 03.04.1964",
  year = "1964",
  publisher = "NRMG",
  address = "Amsterdam",
  pages = "55--71",
  note = "uitgave t.g.v. het eerste lustrum van het Nederlands Rekenmachine Genootschap"
}

@unpublished{ Doedens1996a,
  author = "L. Doedens",
  title = "TeRUGgerekend. Een proeve van de geschiedenis van het Rekencentrum van de Rijksuniversiteit Groningen van 1959 tot 1995",
  shorttitle = "TeRUGgerekend",
  year = "1996",
  url = "http://www.rug.nl/cit/organisatie/rc/geschiedenis/lammertd.doc"
}

@article{ PK19610401a,
  title = "Tijdens interne bijeenkomst. Ir. F.J. Philips opende Rekencentrum",
  journal = "Philips Koerier",
  year = "1961",
  number = "1 april",
  pages = "13"
}

@article{ PK19630209a,
  title = "ALTRA programmeertaal voor de PASCAL",
  journal = "Philips Koerier",
  year = "1963",
  number = "9 februari",
  pages = "9"
}

@booklet{ AmsterdamscheBank196xa,
  author = "Amsterdamsche Bank",
  title = "Het papier in de bank: beteugeld bankpapier",
  year = "onbekend (waarschijnlijk 1962 of 1963)",
  note = "Verkregen uit het archief van ABN-AMRO"
}

@unpublished{ AmsterdamscheBank1955a,
  author = "Organisatie Afdeling Amsterdamsche Bank",
  title = "UNIVAC (Universal Automatic Computer). Electronische machines voor administratieve doeleinden",
  year = "1955",
  note = "3 Maart 1955; Verkregen uit het archief van ABN-AMRO"
}

@techreport{ Electrologica1957a,
  author = "Electrologica",
  title = "Korte algemene beschrijving van de X-1",
  number = "EL-1-N",
  year = "1957",
  note = "CWI archief M3c"
}

@unpublished{ Kosten19xxa,
  author = "L. Kosten",
  title = "Voorschriften voor het gebruik van Zebra",
  note = "CWI archief M3c",
  year = "jaar onbekend"
}

@article{ Contact1954a,
  title = "Reorganisatie",
  journal = "Contact",
  volume = "17",
  number = "1",
  year = "1954",
  month = feb,
  pages = "8--9",
  note = "Personeelsblad Vesta",
}

@article{ Contact1954b,
  title = "De eerste ``machinale'' polis",
  journal = "Contact",
  volume = "17",
  number = "4",
  year = "1954",
  month = aug,
  pages = "4, 6",
  note = "Personeelsblad Vesta",
}

@article{ Contact1955a,
  title = "Reorganisatie",
  journal = "Contact",
  volume = "18",
  number = "2",
  year = "1955",
  month = apr,
  pages = "5",
  note = "Personeelsblad Vesta",
}

@article{ Contact1955b,
  title = "Reorganisatie",
  journal = "Contact",
  volume = "18",
  number = "6",
  year = "1955",
  month = dec,
  pages = "5",
  note = "Personeelsblad Vesta",
}

@article{ Contact1957a,
  title = "Automatisering",
  journal = "Contact",
  volume = "20",
  number = "1",
  year = "1957",
  month = feb,
  pages = "3--4",
  note = "Personeelsblad Vesta",
}

@article{ Contact1959a,
  title = "Het voortschrijden der techniek: Vesta koopt modernste kantoormachine",
  journal = "Contact",
  volume = "22",
  number = "2",
  year = "1959",
  month = apr,
  pages = "2--4",
  note = "Personeelsblad Vesta",
}

@article{ Contact1960a,
  title = "Univac solid-state computor in Nederland",
  journal = "Contact",
  volume = "23",
  number = "2",
  year = "1960",
  month = apr,
  pages = "3",
  note = "Personeelsblad Vesta",
}

@article{ Contact1960b,
  title = "Welkom!",
  journal = "Contact",
  volume = "23",
  number = "3",
  year = "1960",
  month = jun,
  pages = "8",
  note = "Personeelsblad Vesta",
}

@article{ Contact1960c,
  title = "Een mijlpaal in onze administratie",
  journal = "Contact",
  volume = "23",
  number = "5",
  year = "1960",
  month = nov,
  pages = "2--6",
  note = "Personeelsblad Vesta",
}

@article{ Contact1960d,
  title = "Moderne Atlas",
  journal = "Contact",
  volume = "23",
  number = "5",
  year = "1960",
  month = nov,
  pages = "7",
  note = "Personeelsblad Vesta",
}

@article{ Kompas1941a,
  title = "Van mensen en machines",
  journal = "Het kompas",
  month = apr,
  year = "1941",
  pages = "8--11",
  note = "Personeelsblad Nationale Levensverzekering-Bank"
}

@article{ Kompas1949a,
  title = "Van half negen tot half vijf ... in het nieuwe gebouw",
  journal = "Het kompas",
  volume = "22",
  month = oct,
  year = "1949",
  pages = "34--40",
  note = "Personeelsblad Nationale Levensverzekering-Bank"
}

@article{ Kompas1960a,
  title = "Sterke cijfers: een Nationale traditie",
  journal = "Het Natinoale kompas",
  volume = "33",
  number = "1",
  year = "1960",
  pages = "2--3",
  note = "Personeelsblad Nationale Levensverzekering-Bank"
}

@article{ Schakel1956a,
  title = "Zoeklicht op de ponskaartenafdeling",
  journal = "De schakel",
  number = "104",
  month = jul,
  year = "1956",
  pages = "9--12",
  note = "Personeelsblad De Nederlanden van 1845"
}

@article{ Schakel1957a,
  title = "Onze Gamma Tambour",
  journal = "De schakel",
  number = "115",
  month = jul,
  year = "1957",
  pages = "3--5",
  note = "Personeelsblad De Nederlanden van 1845"
}

@article{ Schakel1957b,
  title = "De doopceel van een Tambour",
  journal = "De schakel",
  number = "117",
  month = oct,
  year = "1957",
  pages = "4--6",
  note = "Personeelsblad De Nederlanden van 1845"
}

@article{ Schakel1957c,
  title = "Contouren van de Gamma Tambour",
  journal = "De schakel",
  number = "117",
  month = oct,
  year = "1957",
  pages = "31--33",
  note = "Personeelsblad De Nederlanden van 1845"
}

@article{ Schakel1958a,
  title = "Een idee?",
  journal = "De schakel",
  number = "122",
  month = apr,
  year = "1958",
  pages = "6--7",
  note = "Personeelsblad De Nederlanden van 1845"
}

@article{ Schakel1958b,
  title = "Aprilgrap van SinterklaasL countouren van de tambourijn",
  journal = "De schakel",
  number = "122",
  month = apr,
  year = "1958",
  pages = "16--17",
  note = "Personeelsblad De Nederlanden van 1845"
}

@article{ Schakel1958c,
  title = "De automatisering in een nieuw jasje",
  journal = "De schakel",
  number = "124",
  month = jun,
  year = "1958",
  pages = "28--29",
  note = "Personeelsblad De Nederlanden van 1845"
}

@article{ Schakel1958d,
  title = "Een maand van vernieuwingen",
  journal = "De schakel",
  number = "125",
  month = jul,
  year = "1958",
  pages = "3--6",
  note = "Personeelsblad De Nederlanden van 1845"
}

@article{ Schakel1958e,
  title = "Een geheugen als een ijzeren pot",
  journal = "De schakel",
  number = "125",
  month = jul,
  year = "1958",
  pages = "17--18",
  note = "Personeelsblad De Nederlanden van 1845"
}

@article{ Schakel1958f,
  title = "Elektronenmachine officieel in werking gesteld",
  journal = "De schakel",
  number = "128",
  month = nov,
  year = "1958",
  pages = "4--7",
  note = "Personeelsblad De Nederlanden van 1845"
}

@article{ Schakel1961a,
  title = "Automatisering: toverwoord voor de 1845",
  journal = "De schakel",
  number = "182",
  month = may,
  year = "1961",
  pages = "3--4",
  note = "Personeelsblad De Nederlanden van 1845"
}

@article{ Schakel1961b,
  title = "1401 -- 1402 -- 1403",
  journal = "De schakel",
  number = "191",
  month = nov,
  year = "1961",
  pages = "1--2",
  note = "Personeelsblad De Nederlanden van 1845"
}

@article{ Schakel1970a,
  title = "Administratiecentrum",
  journal = "2 N",
  number = "48",
  month = may,
  year = "1970",
  pages = "4--6",
  note = "Personeelsblad Nationale Nederlanden"
}

@book{ Kruseman1995a,
  author = "F.E.J. Kruseman Aretz",
  title = "33 jaar beoefening van de informatica",
  publisher = "Technische Universiteit Eindhoven",
  year = "1995",
  note = "afscheidscollege",
  url = "http://alexandria.tue.nl/extra2/redes/aretz1995.pdf"
}

@unpublished{ AEGONArchief,
  title = "Oud Archief AEGON",
  shorttitle = "AEGON"
}

@unpublished{ AEGONArchief165,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 165",
  shorttitle = "AEGON:165"
}

@unpublished{ AEGONArchief166,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 166",
  shorttitle = "AEGON:166"
}

@unpublished{ AEGONArchief167,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 167",
  shorttitle = "AEGON:167"
}

@unpublished{ AEGONArchief168,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 168",
  shorttitle = "AEGON:168"
}

@unpublished{ AEGONArchief169,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 169",
  shorttitle = "AEGON:169"
}

@unpublished{ AEGONArchief170,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 170",
  shorttitle = "AEGON:170"
}

@unpublished{ AEGONArchief171,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 171",
  shorttitle = "AEGON:171"
}

@unpublished{ AEGONArchief172,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 172",
  shorttitle = "AEGON:172"
}

@unpublished{ AEGONArchief173,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 173",
  shorttitle = "AEGON:173"
}

@unpublished{ AEGONArchief174,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 174",
  shorttitle = "AEGON:174"
}

@unpublished{ AEGONArchief250,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 250",
  shorttitle = "AEGON:250"
}

@unpublished{ AEGONArchief251,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 251",
  shorttitle = "AEGON:251"
}

@unpublished{ AEGONArchief254,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 254",
  shorttitle = "AEGON:254"
}

@unpublished{ AEGONArchief256,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 256",
  shorttitle = "AEGON:256"
}

@unpublished{ AEGONArchief258,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 258",
  shorttitle = "AEGON:258"
}

@unpublished{ AEGONArchief261,
  title = "Oud Archief AEGON. Afd. Documentatie nr. 261",
  shorttitle = "AEGON:261"
}

@article{ Heemafpost1960a,
  title = "Heemaf rekent thans ook elektronisch",
  journal = "Heemafpost",
  year = "1960",
  month = dec,
  pages = "12--16"
}

@unpublished{ AMFArchief,
 title = "RHC Limburg (RHCL) 17.41 Algemeen Mijnwerkersfonds",
 shorttitle = "RHCL:17.41"
}

@article{ Schmidt1961a,
  author = "F.J. Schmidt",
  title = "Der Einsats einer X1-Anlage in einem Lebensversicherungsunternehmen",
  journal = "Elektronische Datenverarbeitung",
  volume = "2",
  number = "6",
  year = "1961",
  pages = "235--244"
}

@article{ Schuff1959a,
  author = "H.K. Schuff",
  title = "Die programmgesteuerte Rechenanlage X 1",
  journal = "Elektronische Datenverarbeitung",
  volume = "1",
  number = "1",
  year = "1959",
  pages = "23--31"
}

@article{ Hort1959a,
  author = "E. Hort",
  title = "Die Lochkartengeräte zur X 1",
  journal = "Elektronische Datenverarbeitung",
  volume = "1",
  number = "5",
  year = "1959",
  pages = "44--49"
}

@article{ Hort1959b,
  author = "E. Hort",
  title = "Weitere Anschlußgeräte zur X 1: Schnelldrucker- und Magnetband-Systeme",
  journal = "Elektronische Datenverarbeitung",
  volume = "1",
  number = "8",
  year = "1959",
  pages = "12--14"
}

@mastersthesis{ Beer2006a,
  author = "HT de Beer",
  title = "The history of the ALGOL effort",
  year = "2006",
  school = "Technische Universiteit Eindhoven",
  url = "http://www.heerdebeer.org/ALGOL"
}

@article{ Dijkstra1968a,
  author = "E.W. Dijsktra",
  title = "The structure of the `THE'-multiprogramming system",
  journal = "Communications of the ACM",
  volume = "11",
  number = "5",
  year = "1968",
  pages = "341--346",
  url = "http://www.cs.utexas.edu/users/EWD/ewd01xx/EWD196.PDF"
}

@book{ Electrologica1966a,
  author = "N.V. Electrologica",
  title = "Programmering EL X8",
  year = "1966",
  publisher = "Electrologica",
  address = "Den Haag"
}


@unpublished{ DSMArchief172621C,
  title = "RHC Limburg (RHCL) 17.26: Centraal Archief DSM",
  shorttitle = "RHCL:17.26"
}


@unpublished{ ONMijnenArchief1705E,
  title = "RHC Limburg (RHCL) 17.05E: Oranje-Nassau Mijnen: financieel-economische, comptabele en
administratieve aangelegenheden",
  shorttitle = "RHCL:17.05E"
}

@article{ Nouwen2003a,
  author = "P. Nouwen",
  title = "Het mirakel van Amsterdam",
  journal = "Shell Venster",
  year = "2003",
  month = may,
  pages = "19--23"
}

@article{ Automatiseringsgids1984a,
  author = "R. Keijzer",
  title = "Rekenmachine in gebruik bij fokker",
  journal = "De Automatisering Gids",
  month = mrt,
  year = "1984",
  note = "serie artikelen: Van telraam tot computer",
  pages = "5"
}

@unpublished{ Dek2008a,
  author = "G. Alberts and H.T. de Beer",
  title = "Interview met A.W. Dek, directeur van de Nillmij en commissaris van Electrologica, gehouden op 8 januari 2008",
  shorttitle = "Interview met A.W. Dek",
  year = "2008"
}

@unpublished{ Philips19xxa,
  author = "Philips",
  title = "Philips Data Systems 1959 -- 1969",
  year = "onbekend"
}

@unpublished{ Heijn2008a,
  author = "H.T. de Beer and A. van den Boogaard",
  title = "Interview met H. Heijn gehouden op 1 februari 2008",
  shorttitle = "Interview met H. Heijn",
  year = "2008"
}

@unpublished{ Philips1963a,
  author = "H.J. Heijn",
  title = "Jaarverslag over 1963 van de groep ``Digitale Technieken''",
  shorttitle = "jaarverslag Digitale Technieken",
  year = "1964",
  note = "Uit het persoonlijk archief van H. Heijn"
}

@unpublished{ Lunbeck2007a,
  author = "R.J. Lunbeck",
  title = "De eerste computer bij Shell in Nederland",
  year = "2007",
  url = "http://www.voeks.nl/Computers/CiS08.htm",
  note = "Deel acht van: 50 Jaar computers in Shell"
}

@unpublished{ Shell2007a,
  title = "50 Jaar computers in Shell",
  url = "http://www.voeks.nl/Computers/"
}

@unpublished{ PASCAL1956a,
  title = "Bruikbaarheid van drie getal-representatie-systemen in een binair parallel-rekenorgaan met logische optelling",
  year = "1956",
  note = "Uit het persoonlijk archief van H. Heijn"
}

@unpublished{ PASCAL1961a,
  title = "Feestelijke maaltijd op woensdag 29 maart 1961 in Kasteel Maurick te Vucht. Deze maaltijd wordt aangeboden door het natuurkundig laboratorium aan allen die op enigerlei wijze nauw betrokken zijn geweest bij de bouw van de rekenmachines PASCAL en STEVIN",
  shorttitle = "Feestelijke maaltijd op woensdag 29 maart 1961 in Kasteel Maurick te Vucht",
  year = "1961",
  note = "Uit het persoonlijk archief van H. Heijn"
}

@unpublished{ Philips1964a,
  author = "H.J. Heijn",
  title = "Jaarverslag over 1964 van de groep ``Digitale Technieken''",
  shorttitle = "jaarverslag Digitale Technieken",
  year = "1965",
  note = "Uit het persoonlijk archief van H. Heijn"
}

@unpublished{ Ester1960a,
  author = "L. Ester and A.H.A. Wagemans",
  title = "Metingen betreffende de storingsgevoeligheid van de elektronische rekenmachine ``PASCAL''",
  year = "1960",
  note = "Uit het persoonlijk archief van H. Heijn"
}

@unpublished{ Heijn1960a,
  author = "H.J. Heijn",
  title = "Nadere bespreking van enige details van de Pascal. De opteller",
  shorttitle = "De opteller",
  year = "1960",
  note = "Uit het persoonlijk archief van H. Heijn"
}

@unpublished{ Reede1960a,
  author = "W.A. van Reede",
  title = "Nadere bespreking van enige details van de Pascal. Besturing en modificatie-geheugen",
  shorttitle = "Besturing en modificatie-geheugen",
  year = "1960",
  note = "Uit het persoonlijk archief van H. Heijn"
}

@unpublished{ PASCAL1961b,
  title = "PACE, PASCAL en STEVIN. Demonstratie voorbeelden ter gelegenheid van de opening van het Rekencentrum",
  shorttitle = "PACE, PASCAL en STEVIN",
  year = "1961",
  note = "Uit het persoonlijk archief van H. Heijn"
}

@unpublished{ Gill1960a,
  title = "Brief van S.G. Gill aan Heijn van 24 maart 1960 over de ``Gill''-eenheid",
  year = "1960",
  note = "Uit het persoonlijk archief van H. Heijn"
}

@unpublished{ PETER1954a,
  author = "J.F. Klinkhamer",
  title = "Computerbespreking. Welke representatie van negatieve getallen verdient de voorkeur in geheugen en rekenorgaan? Hoeveel plezier heeft men van overflowbits in de accumulator?",
  shorttitle = "Computerbespreking",
  year = "1954",
  note = "Uit het persoonlijk archief van H. Heijn"
}

@unpublished{ Philips19xxb,
  title = "iets over de geschiedenis van rekenmachines",
  year = "onbekend",
  note = "Uit het persoonlijk archief van H. Heijn"
}

@unpublished{ Klunder1960a,
  author = "J. Klunder",
  title = "``Klapperen'' van tape",
  year = "1960",
  note = "Uit het persoonlijk archief van H. Heijn"
}

@book{ NRMG1964a,
  author = "A. van Wijngaarden and A.B. Frielink and H. van de Weg and E.W. Dijkstra",
  title = "NRMG 1959-1964 : voordrachten gehouden op 03.04.1964",
  shorttitle = "NRMG 1959-1964",
  year = "1964",
  publisher = "NRMG",
  address = "Amsterdam",
  note = "uitgave t.g.v. het eerste lustrum van het Nederlands Rekenmachine Genootschap"
}

@inproceedings{ Wijngaarden1964a,
  author = "A. van Wijngaarden",
  title = "Rekenen in Nederland",
  booktitle = "NRMG 1959-1964 : voordrachten gehouden op 03.04.1964",
  year = "1964",
  publisher = "NRMG",
  address = "Amsterdam",
  pages = "5--23",
  note = "uitgave t.g.v. het eerste lustrum van het Nederlands Rekenmachine Genootschap"
}

@inproceedings{ Frielink1964a,
  author = "A.B. Frielink",
  title = "Enkele aspecten van de automatisering der bestuurlijke informatieverwerking",
  booktitle = "NRMG 1959-1964 : voordrachten gehouden op 03.04.1964",
  year = "1964",
  publisher = "NRMG",
  address = "Amsterdam",
  pages = "24--34",
  note = "uitgave t.g.v. het eerste lustrum van het Nederlands Rekenmachine Genootschap"
}

@inproceedings{ Weg1964a,
  author = "H. van der Weg",
  title = "De ontwikkeling van enige computertechnieken gedurende de laatste decade",
  booktitle = "NRMG 1959-1964 : voordrachten gehouden op 03.04.1964",
  year = "1964",
  publisher = "NRMG",
  address = "Amsterdam",
  pages = "35--54",
  note = "uitgave t.g.v. het eerste lustrum van het Nederlands Rekenmachine Genootschap"
}

@unpublished{ NRMGArchief,
  title = "Archief Nederlands Rekenmachine Genootschap (NRMG)",
  shorttitle = "NRMG",
  note = "Archief ondergebracht in het CWI-archief"
}

@unpublished{ Dijkstra1960c,
  author = "E.W. Dijkstra",
  title = "Kortste bomen uit een graph",
  year = "1960",
  note = "Voordracht in de serie ``actualiteiten'' gehouden op zaterdag 30 januari 1960. Uit het NRMG archief."
}

@unpublished{ Heijn1959a,
  author = "H.J. Heijn and J.C. Selman",
  title = "Algemene beschrijving van de PASCAL",
  year = "1959",
  note = "Uit het NRMG archief"
}

@article{ Wijngaarden1959a,
  author = "A. van Wijngaarden",
  title = "Pentomino",
  journal = "Mededelingen NRMG",
  volume = "1",
  year = "1959",
  number = "2",
  pages = "2--7",
  note = "Voordracht gehouden op de 1e Algemene Vergadering NRMG op 30 mei 1959. Uit het NRMG archief."
}

@article{ Scholten1960a,
  author = "C.S. Scholten",
  title = "Enkele opmerkingen over tellers",
  journal = "Mededelingen NRMG",
  volume = "2",
  year = "1960",
  number = "1",
  pages = "9--15",
  note = "Voordracht gehouden op 12 februari 1960. Uit het NRMG archief."
}

@article{ Grijseels1960a,
  author = "R.A. Grijseels and C.S. Scholten",
  title = "Enkele aspecten uit de SATCO-rekenmachine",
  journal = "Mededelingen NRMG",
  volume = "2",
  year = "1960",
  number = "3",
  pages = "3--15",
  note = "Voordracht gehouden op 18 juni 1960. Uit het NRMG archief."
}

@article{ Dijkstra1960d,
  author = "E.W. Dijkstra",
  title = "Een ALGOL-vertaler voor de X1",
  journal = "Mededelingen NRMG",
  volume = "2",
  year = "1960",
  number = "3",
  pages = "16--30",
  note = "Voordracht gehouden op 25 november 1960. Uit het NRMG archief."
}

@article{ Beernink1962a,
  author = "G.J. Beernink",
  title = "Optica en rekenmachines (Het gebruik van rekenmachines bij het ontwerpen van lenzenstelsels)",
  journal = "Mededelingen NRMG",
  volume = "4",
  year = "1962",
  number = "1",
  pages = "3--5",
  note = "Voordracht gehouden op 19 januari 1962. Uit het NRMG archief."
}

@article{ Walther1962a,
  author = "G.L. Walther",
  title = "Digitale registratie op magnetische geheugentrommels",
  journal = "Mededelingen NRMG",
  volume = "4",
  year = "1962",
  number = "1",
  pages = "6--8",
  note = "Voordracht gehouden op 16 februari 1962. Uit het NRMG archief."
}

@article{ Verkruissen1962a,
  author = "A.F. Verkruissen",
  title = "De organisatie van bandgeheugens van PASCAL en STEVIN",
  journal = "Mededelingen NRMG",
  volume = "4",
  year = "1962",
  number = "2",
  pages = "4--8",
  note = "Voordracht gehouden op 9 maart 1962. Uit het NRMG archief."
}

@article{ Klunder1962a,
  author = "J. Klunder",
  title = "Het automatische programmeersysteem ``ALTRA''",
  journal = "Mededelingen NRMG",
  volume = "4",
  year = "1962",
  number = "4",
  pages = "10--13",
  note = "Voordracht gehouden op 29 mei 1962. Uit het NRMG archief."
}

@article{ Meertens1962a,
  author = "L.G.L.Th. Meertens",
  title = "Kunstmatige Intelligentie. Een programma voor het optimaal oplossen van een klasse van problemen",
  journal = "Mededelingen NRMG",
  volume = "4",
  year = "1962",
  number = "5",
  pages = "6--13",
  note = "Voordracht gehouden op 19 oktober 1962. Uit het NRMG archief."
}

@article{ Mol1963a,
  author = "E. Mol",
  title = "Machinale herkenning van spraak",
  journal = "Mededelingen NRMG",
  volume = "5",
  year = "1963",
  number = "1",
  pages = "11--14",
  note = "Voordracht gehouden op 23 november 1962. Uit het NRMG archief."
}

@article{ Folkers1963a,
  author = "J.S. Folkers",
  title = "Problemen bij het samenstellen van lesroosters met een rekenautomaat",
  journal = "Mededelingen NRMG",
  volume = "5",
  year = "1963",
  number = "3",
  pages = "6--10",
  note = "Voordracht gehouden op 22 maart 1963. Uit het NRMG archief."
}

@article{ Wijngaarden1963a,
  author = "A. van Wijngaarden",
  title = "LOGLAN",
  journal = "Mededelingen NRMG",
  volume = "5",
  year = "1963",
  number = "6",
  pages = "4--14",
  note = "Voordracht gehouden op 22 april 1963. Uit het NRMG archief."
}

@article{ Kosten1964a,
  author = "L. Kosten",
  title = "Simulatie van verkeersproblemen",
  journal = "Mededelingen NRMG",
  volume = "6",
  year = "1964",
  number = "1",
  pages = "4--8",
  note = "Voordracht gehouden op 20 september 1963. Uit het NRMG archief."
}

@article{ Becque1964a,
  author = "A.J. Becqué",
  title = "Berekening van statisch onbepaalde konstrukties met behulp van een electronische rekenmachine",
  journal = "Mededelingen NRMG",
  volume = "6",
  year = "1964",
  number = "2",
  pages = "4--8",
  note = "Voordracht gehouden op 6 december  1963. Uit het NRMG archief."
}

@article{ Poel1964a,
  author = "W.L. van der Poel",
  title = "SERA, een gesimuleerde machine",
  journal = "Mededelingen NRMG",
  volume = "6",
  year = "1964",
  number = "5",
  pages = "6--17",
  note = "Voordracht gehouden op  31 januari 1964. Uit het NRMG archief."
}

@unpublished{ ECMA2008a,
  author = "ECMA",
  title = "History of Ecma",
  year = "2008",
  url = "http://www.ecma-international.org/memento/history.org",
  note = "website"
}

@inproceedings{ Auerbach1986a,
  author = "I.L. Auerbach",
  title = "Personal Recollections on The Origin of IFIP",
  editor = "H. Zemanek",
  booktitle = "A Quarter Century of IFIP. The IFIP Silver Summary. Proceedings of the 25th Anniversary Celebration of IFIP Munich, F.R.G., 27 march, 1985",
  year = "1986",
  publisher = "North-Holland",
  address = "Amsterdam",
  pages = "41--69"
}

@inproceedings{ Auerbach1986b,
  author = "I.L. Auerbach",
  title = "IFIP -- The Early Years: 1960 -- 1971",
  editor = "H. Zemanek",
  booktitle = "A Quarter Century of IFIP. The IFIP Silver Summary. Proceedings of the 25th Anniversary Celebration of IFIP Munich, F.R.G., 27 march, 1985",
  year = "1986",
  publisher = "North-Holland",
  address = "Amsterdam",
  pages = "71--92"
}

@book{ Wilkes1951a,
  author = "M.V. Wilkes and D.J. Wheeler and S. Gill",
  title = "The preparation of programs for an electronic digital computer. With special reference to the EDSAC and the use of a library of subroutines",
  shorttitle = "The preparation of programs for an electronic digital computer",
  year = "1951",
  publisher = "Addison-Wesley Press"
}

@article{ Schroeff1968a,
  author = "H.J. Schroeff",
  title = "Bij ons tweede lustrum, 'n terugblik en een afscheid",
  journal = "Informatie",
  year = "1968",
  number = "6",
  volume = "10",
  pages = "183--187"
}

@article{ Informatie1968a,
  title = "Highlights uit de jaarverslagen",
  journal = "Informatie",
  year = "1968",
  number = "6",
  volume = "10",
  pages = "187--189"
}

@article{ Schinkel1968a,
  author = "A. Schinkel and A.A.M. Veenhuis",
  title = "Tien jaren van voorlichting en opleiding",
  journal = "Informatie",
  year = "1968",
  number = "6",
  volume = "10",
  pages = "191--196"
}

@article{ Informatie1968b,
  title = "Het studiecentrum in het buitenland",
  journal = "Informatie",
  year = "1968",
  number = "6",
  volume = "10",
  pages = "196--197"
}

@article{ Bruijn1968a,
  author = "W.K. de Bruijn",
  title = "De ontwikkeling van het computergebruik in Nederland en de gevolgen daarvan voor de opleiding van personeel",
  shorttitle = "De ontwikkeling van het computergebruik in Nederland",
  journal = "Informatie",
  year = "1968",
  number = "6",
  volume = "10",
  pages = "201--203"
}

@article{ Wolbers1968a,
  author = "D.H. Wolbers",
  title = "Het Nederlands Rekenmachine Genootschap",
  journal = "Informatie",
  year = "1968",
  number = "6",
  volume = "10",
  pages = "260--261"
}