@{,
author = {https://digital.katalog.queersearch.org/s/katalog/item/40731,},
year = {1990},
title = {Karl Heinrich Ulrichs: Sein Leben und sein Werk},
publisher = {https://digital.katalog.queersearch.org/s/katalog/item/48574},
isbn = {3-432-98321-2}
}