https://digital.katalog.queersearch.org/s/katalog/item/40860 and https://digital.katalog.queersearch.org/s/katalog/item/40861, “Die Buecher der namenlosen Liebe: 1. Band”, https://digital.katalog.queersearch.org/s/katalog/item/40631, QueerSearch, accessed 29. April 2025, https://digital.katalog.queersearch.org/s/katalog/item/17131