^"Dirk Hillbrecht personal homepage" (in German). Retrieved 2009-06-22.
^"Die Piratenpartei Deutschland". Die Welt (in German). 21 June 2009. Archived from the original on June 28, 2009. Retrieved 2009-06-22.
^"Tauss tritt aus SPD aus - und wird Pirat" (in German). Financial Times Deutschland / Wissen.de. 20 June 2009. Archived from the original on 23 June 2009. Retrieved 2009-06-22.
^"Kontakt". patentfrei.de website (in German). Archived from the original on 2007-09-22. Retrieved 2009-06-22.