 | original on 2008-09-07. Retrieved 2007-10-15. "Auf den Spuren der deutschen Computermaus" [In the footsteps of the German computer mouse] (in German). Heise Verlag... 25 KB (2,726 words) - 21:33, 2 February 2024 |
 | […] (4 pages) Bulow, Ralf (2009-04-28). "Auf den Spuren der deutschen Computermaus" [In the footsteps of the German computer mouse]. Heise online (in German)... 126 KB (13,563 words) - 07:42, 30 April 2024 |
 | 6, 2013. Bülow, Ralf (April 28, 2009). "Auf den Spuren der deutschen Computermaus" [On the trail of the German computer mouse] (in German). Hannover: Heise... 25 KB (2,521 words) - 22:20, 25 April 2024 |
 | (PDF). Wireless World. 73 (8): 366–372. "Auf den Spuren der deutschen Computermaus" [In the footsteps of the German computer mouse] (in German). Heise Verlag... 56 KB (1,043 words) - 20:50, 8 May 2024 |
 | Ebner, Susanne (2018-01-24). "Entwickler aus Singen über die Anfänge der Computermaus: "Wir waren der Zeit voraus"" [Singen-based developer about the advent... 109 KB (12,942 words) - 06:13, 10 May 2024 |
 | July 1, 2013. Retrieved January 25, 2013. "Auf den Spuren der deutschen Computermaus" [In the footsteps of the German computer mouse] (in German). Heise Verlag... 7 KB (540 words) - 04:31, 2 December 2023 |