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  c't 16/99, S. 16: Macworld

  https://web.archive.org/web/20010505112346/http://www.heise.de/ct/99/16/016/

  c't - Magazin für Computertechnik

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  c't 26/2002, S. 54: TCPA

  https://web.archive.org/web/20030401234603/http://www.heise.de/ct/02/26/054/

  c't - Magazin für Computertechnik

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  c't 20/2000, S. 104: Streitgespräch

  https://web.archive.org/web/20010429183224/http://www.heise.de/ct/00/20/104/

  c't - Magazin für Computertechnik

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  c't 7/96, S. 232: PC-Netze

  https://web.archive.org/web/20000817212113/http://www.heise.de/ct/96/07/232/

  c't - Magazin für Computertechnik

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  c't 10/96, S. 50: Telekommunikation

  https://web.archive.org/web/19990915034922/http://www01.heise.de/ct/96/10/050/

  c't - Magazin für Computertechnik

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  c't 08/98, S. 16: Datenkiller: Magnete im InterRegio

  https://web.archive.org/web/19990915122423/http://www01.heise.de/ct/98/08/016/

  c't - Magazin für Computertechnik

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  c't 25/98, S. 68: Shareware & PD

  https://web.archive.org/web/20050423201036/http://www.heise.de/ct/98/25/068/default.shtml

  c't - Magazin für Computertechnik

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  c't 18/99, S. 174: Mobilfunk

  https://web.archive.org/web/20010306184504/http://www.heise.de/ct/99/18/174/default.shtml

  c't - Magazin für Computertechnik

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  c't 23/2003, S. 180: Browser-Spiele

  https://web.archive.org/web/20040223092252/http://www.heise.de/ct/03/23/180/default.shtml

  c't - Magazin für Computertechnik

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  c't 12/2003, S. 148: Dias abfotografieren

  https://web.archive.org/web/20030610052714/http://heise.de/ct/03/12/148/

  c't - Magazin für Computertechnik

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