Micheler, Stefan (2002). "Homophobic Propaganda and the Denunciation of Same-Sex-Desiring Men under National Socialism". Journal of the History of Sexuality. 11 (1–2): 105–130. doi:10.1353/sex.2002.0011. S2CID142752321.
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Haeberle, Erwin J. (1981). "Swastika, Pink Triangle and Yellow Star: The Destruction of Sexology and the Persecution of Homosexuals in Nazi Germany". Journal of Sex Research. 17 (3): 270–87. doi:10.1080/00224498109551120. PMID28135957.
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Micheler, Stefan (2002). "Homophobic Propaganda and the Denunciation of Same-Sex-Desiring Men under National Socialism". Journal of the History of Sexuality. 11 (1–2): 105–130. doi:10.1353/sex.2002.0011. S2CID142752321.