“Valdis O. Lumans, Himmler`s Auxiliaries. The Volksdeutsche Mittelstelle and the German National Minorities of Europe, 1933-1945”. Zeitschrift für Ostmitteleuropa-Forschung 46, no. 4 (December 22, 1997): 575–577. Accessed September 16, 2026. https://openjournals.osmikon.de/zfo/article/view/6415.