https://digital.katalog.queersearch.org/s/katalog/item/38254, https://digital.katalog.queersearch.org/s/katalog/item/38225, and https://digital.katalog.queersearch.org/s/katalog/item/40165, “Grenzgänge: Schwule und Lesben in der Arbeitswelt”, https://digital.katalog.queersearch.org/s/katalog/item/48476, QueerSearch, accessed 30. April 2025, https://digital.katalog.queersearch.org/s/katalog/item/16247