Egbert Klautke: German "Race Psychology" and its Implementations in Central Europe. Egon von Eickstedt and Rudolf Hippius. In: M. Turda, M and P. Weindling (Hrsg.): ‚Blood and Homeland‘. Eugenics and Racial Nationalism in Central and Southeast Europe, 1900–1940. Central European University Press, Budapest 2007, S. 23–40. PDF
