YouTube. Peter Cröniger (March 2011). "Perfekte Landeeinteilung für Gleitschirm und Drachen" (pdf). DHV-Info (in German) (169). DHV: 61–65. Retrieved...
69 KB (9,356 words) - 05:11, 1 April 2024
2023-06-19. Zeitung, Jungfrau (2006-11-13). "Doppelgold für Wilderswiler Gleitschirm-Traumpaar". Jungfrau Zeitung (in German). Retrieved 2023-06-19. Zeitung...
7 KB (639 words) - 18:10, 18 March 2024
(Rucksackmotoren) called the Büttner Crazy Plane and a line of powered parachutes (Gleitschirm Trikes) called the Büttner Crazy Flyer. At one time it also produced...
3 KB (152 words) - 01:29, 27 January 2022