German Expressionism.com
http://www.germanexpressionism.com/
The Robert Gore Rifkind Center for German Expressionist Studies at the Los Angeles County Museum (LACMA)
http://www.germanexpressionism.com/
David Hudson, “Where the Horror Came From,” October 29, 2002, GreenCine
http://www.greencine.com/article?action=view&articleID=55
