https://digital.katalog.queersearch.org/s/katalog/item/41148, https://digital.katalog.queersearch.org/s/katalog/item/41149, and https://digital.katalog.queersearch.org/s/katalog/item/41150, “Sadomasochismus: Szenen und Rituale”, https://digital.katalog.queersearch.org/s/katalog/item/47507, QueerSearch, accessed 17. Juni 2025, https://digital.katalog.queersearch.org/s/katalog/item/17573