Evans, The Coming of the Third Reich, 127-8, 375-6.

Burkhard Jellonek, Homosexuelle unter dem Hakenkreuz: Die Verfolgung von Homosexuellen in Dritten Reich (Paderborn, 1990), 19-50; Richard Plant, The Pink Triangle: The Nazi War Against Homosexuals (Edinburgh, 1987 [1986]), 104; Smith and Peterson (eds.), Heinrich Himmler: Geheimreden 1933 — 1945, 90-91, 115-23; Geoffrey J. Giles, «The Institutionalization of Homosexual Panic in the Third Reich», in Gellately and Stoltzfus (eds.), Social Outsiders, 233-55.