https://digital.katalog.queersearch.org/s/katalog/item/38881 and https://digital.katalog.queersearch.org/s/katalog/item/38882, “Die drei ??? und das Hexenhandy.”, https://digital.katalog.queersearch.org/s/katalog/item/47782, QueerSearch, accessed 30. April 2025, https://digital.katalog.queersearch.org/s/katalog/item/4986