Bauer, Alexander (December 15, 2017). "2143.21 zurück im Allgäu" [2143.21 back in the Allgäu]. lok-report.de (in German). Lokomotive Fachbuchhandlung. Archived from the original on February 2, 2020. Retrieved February 2, 2020.
lok-report.de
Bauer, Alexander (December 15, 2017). "2143.21 zurück im Allgäu" [2143.21 back in the Allgäu]. lok-report.de (in German). Lokomotive Fachbuchhandlung. Archived from the original on February 2, 2020. Retrieved February 2, 2020.