@article{MM2_1977__22_154479,
     author = {J\"urgen Tappe},
     title = {Irreducible {Projective} {Representations} of {Finite} {Groups.}},
     journal = {Manuscripta mathematica},
     pages = {33--46},
     publisher = {mathdoc},
     volume = {22},
     year = {1977},
     zbl = {0365.20016},
     url = {http://geodesic.mathdoc.fr/item/MM2_1977__22_154479/}
}