https://digital.katalog.queersearch.org/s/katalog/item/38987, “Ganz normal anders: Auskünfte schwuler Männer aus der DDR”, https://digital.katalog.queersearch.org/s/katalog/item/42601, QueerSearch, accessed 29. April 2025, https://digital.katalog.queersearch.org/s/katalog/item/16198