https://digital.katalog.queersearch.org/s/katalog/item/45781 and https://digital.katalog.queersearch.org/s/katalog/item/38216, “DEN § 175 ERSATZLOS STREICHEN -JETZT ?”, [1980-1989], QueerSearch, accessed 30. April 2025, https://digital.katalog.queersearch.org/s/katalog/item/31961