https://digital.katalog.queersearch.org/s/katalog/item/52316, “Myth of the Homosexual Subculture in Weimar Germany? Thoughts on Lesbian Circumstances in the 1920s”, https://digital.katalog.queersearch.org/s/katalog/item/49485, QueerSearch, accessed 1. Mai 2025, https://digital.katalog.queersearch.org/s/katalog/item/56206