https://digital.katalog.queersearch.org/s/katalog/item/40009, “Verbotene Verhältnisse: Frauenliebe 1938-1945”, https://digital.katalog.queersearch.org/s/katalog/item/46796, QueerSearch, accessed 29. April 2025, https://digital.katalog.queersearch.org/s/katalog/item/16081