https://digital.katalog.queersearch.org/s/katalog/item/41594 and https://digital.katalog.queersearch.org/s/katalog/item/41595, “Heavy Cross: Die Autobiografie”, https://digital.katalog.queersearch.org/s/katalog/item/47646, QueerSearch, accessed 16. Juni 2025, https://digital.katalog.queersearch.org/s/katalog/item/18515