@article{MAN_1937__114_159923,
     author = {H.G. Schumann},
     title = {\"Uber {Moduln} und {Gruppenbilder}},
     journal = {Mathematische Annalen},
     pages = {385--413},
     publisher = {mathdoc},
     volume = {114},
     year = {1937},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1937__114_159923/}
}