@article{JRAM_1930__162_149726,
     author = {Arnold Emch},
     title = {Finite groups and their geometric representation.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {238--255},
     publisher = {mathdoc},
     volume = {162},
     year = {1930},
     zbl = {56.0133.04},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1930__162_149726/}
}