@{,
author = {https://digital.katalog.queersearch.org/s/katalog/item/40731,},
year = {2005},
title = {Karl Heinrich Ulrichs: Pioneer of the Modern Gay Movement},
publisher = {https://digital.katalog.queersearch.org/s/katalog/item/49625},
isbn = {1-4196-0698-0}
}