Pfitzner, Joachim (13 September 1964). "Sensation durch Frauen-K2" [Sensation through Women-K2]. Neues Deutschland (in German). Vol. 19, no. 253. p. 8. Archived from the original on 1 December 2018. Retrieved 1 December 2018.
Pfitzner, Joachim (13 September 1964). "Sensation durch Frauen-K2" [Sensation through Women-K2]. Neues Deutschland (in German). Vol. 19, no. 253. p. 8. Archived from the original on 1 December 2018. Retrieved 1 December 2018.