@article{JRAM_1952__190_150218,
     author = {Wolfgang Gasch\"utz},
     title = {Zur {Erweiterungstheorie} der endlichen {Gruppen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {93--107},
     publisher = {mathdoc},
     volume = {190},
     year = {1952},
     zbl = {0047.02702},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1952__190_150218/}
}