@{,
year = {1994/2023},
title = {Research on the Riddle of Man-Manly Love [Forschungen über das Räthsel der mannmännlichen Liebe]. Volume I and II: Translated by Michael Lombardi-Nash, Introduction by Vern L. Bullough},
publisher = {https://digital.katalog.queersearch.org/s/katalog/item/49217}
}