• 

  c't 7/2005, S. 88: Internet-Infrastruktur

  https://web.archive.org/web/20050319095233/http://www.heise.de/ct/05/07/088/

  c't - Magazin für Computertechnik

• 

  c't 12/2004, S. 96: c't-Download-Aktion

  https://web.archive.org/web/20040611170601/http://www.heise.de/ct/04/12/096/

  c't - Magazin für Computertechnik

• 

  c't 8/2008, S. 26: Mobilfunk

  https://web.archive.org/web/20080405165945/http://www.heise.de/ct/08/08/026/

  c't - Magazin für Computertechnik

• 

  c't 8/96, S. 18: Markt

  https://web.archive.org/web/20010708154001/http://www.heise.de/ct/96/08/018/

  c't - Magazin für Computertechnik

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  c't - English pages (10/98, page 166)

  https://web.archive.org/web/19990913191434/http://www01.heise.de/ct/english/98/10/166/

  c't - Magazin für Computertechnik

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  c't - Wettbewerb: creativ '08

  https://web.archive.org/web/20080416194439/http://www.heise.de/ct/creativ/08/02/details/

  c't - Magazin für Computertechnik

• 

  c't 23/2006, S. 136: Flash-Technik

  https://web.archive.org/web/20061117065128/http://www.heise.de/ct/06/23/136/

  c't - Magazin für Computertechnik

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  c't 18/2006, S. 62: Forschung

  https://web.archive.org/web/20060830181717/http://www.heise.de/ct/06/18/062/

  c't - Magazin für Computertechnik

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  c't 11/2006, S. 86: ADSL2+: Angebote

  https://web.archive.org/web/20060902063746/http://www.heise.de/ct/06/11/086/

  c't - Magazin für Computertechnik

• 

  c't 8/2007, S. 86: DSL optimal

  https://web.archive.org/web/20070406184040/http://www.heise.de/ct/07/08/086/

  c't - Magazin für Computertechnik

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