https://digital.katalog.queersearch.org/s/katalog/item/63873, “Gay German Jews and the Arrival of "Homosexuality" to Mandatory Palestine”, https://digital.katalog.queersearch.org/s/katalog/item/49485, QueerSearch, accessed 14. März 2025, https://digital.katalog.queersearch.org/s/katalog/item/55657