Hotz, Stefan (15 September 2013). "Ein Krokodil kehrt zurück" [A crocodile returns]. Neue Zürcher Zeitung (in German).
Stalder, Helmut; Ramp, Annick (28 April 2020). "Das Reptil aus der Urzeit der Elektrotechnik lebt" [The reptile from prehistoric times in electrical engineering is alive]. Neue Zürcher Zeitung (in German).
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"SWISS Ce 6". Personal.umich.edu. Archived from the original on 16 February 2013. Retrieved 19 March 2013.
"SWISS Ce 6". Personal.umich.edu. Archived from the original on 16 February 2013. Retrieved 19 March 2013.
web.archive.org
"SWISS Ce 6". Personal.umich.edu. Archived from the original on 16 February 2013. Retrieved 19 March 2013.
"SWISS Ce 6". Personal.umich.edu. Archived from the original on 16 February 2013. Retrieved 19 March 2013.