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Schwarzer, Klaus; Sterr, Horst (2010). "Germany". In Bird, Eric C. (ed.). Encyclopedia of the World's Coastal Landforms. Vol. 1. Springer. p. 645. ISBN978-1-4020-8638-0.
"Entwicklung der Insel Amrum" [Development of Amrum Island] (in German). Government of Schleswig-Holstein. Archived from the original on 24 December 2013. Retrieved 17 January 2013.
"Tod auf Amrum" [Death on Amrum]. Heilbronner Stimme (in German). Teleschau. 25 May 2010. Archived from the original on 17 July 2013. Retrieved 16 July 2013.
waddensea-secretariat.org
Reineking, Bettina (1999). "The Pallas Accident"(PDF). Wadden Sea Newsletter (1). Common Wadden Sea Secretariat: 22–25. Archived from the original(PDF) on 2007-10-28. Retrieved 2008-09-27.
"Entwicklung der Insel Amrum" [Development of Amrum Island] (in German). Government of Schleswig-Holstein. Archived from the original on 24 December 2013. Retrieved 17 January 2013.
Reineking, Bettina (1999). "The Pallas Accident"(PDF). Wadden Sea Newsletter (1). Common Wadden Sea Secretariat: 22–25. Archived from the original(PDF) on 2007-10-28. Retrieved 2008-09-27.