@article{Steffens2004,
author = {Steffens, M.C. and Wagner, C.},
title= {Attitudes toward lesbians, gay men, bisexual women, and bisexual men in Germany},
year = {2004},
doi = {10.1080/00224490409552222},
journal = {Journal of Sex Research },
volume = {41},
number = {2},
pages = {137--149},
}