https://digital.katalog.queersearch.org/s/katalog/item/39117 and https://digital.katalog.queersearch.org/s/katalog/item/45268, “Das konträre Geschlechtsgefühl”, https://digital.katalog.queersearch.org/s/katalog/item/49594, QueerSearch, accessed 15. März 2025, https://digital.katalog.queersearch.org/s/katalog/item/30024