https://digital.katalog.queersearch.org/s/katalog/item/44232, “Bilder zur Geschichte der Leipziger Universitätspsychiatrie”, https://digital.katalog.queersearch.org/s/katalog/item/50291, QueerSearch, accessed 28. April 2025, https://digital.katalog.queersearch.org/s/katalog/item/27691