https://digital.katalog.queersearch.org/s/katalog/item/63901, “À propos d’une rencontre +... Numa Praetorius et Georges Eekhoud”, https://digital.katalog.queersearch.org/s/katalog/item/49754, QueerSearch, accessed 2. Mai 2025, https://digital.katalog.queersearch.org/s/katalog/item/55738