https://digital.katalog.queersearch.org/s/katalog/item/64189, https://digital.katalog.queersearch.org/s/katalog/item/65117, and https://digital.katalog.queersearch.org/s/katalog/item/65127, “A Note on the Role of Achlorhydria in the Etiology of Subacute Combined Degeneration of the Spinal Cord: An Experimental Study in the Gastrectomized Dog”, QueerSearch, accessed 28. April 2025, https://digital.katalog.queersearch.org/s/katalog/item/56794