@article{JRAM_1928__159_149669,
     author = {Herbert Rauter},
     title = {Abstrakte {Kompositionssysteme} oder {\"Ubergruppen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {229--237},
     publisher = {mathdoc},
     volume = {159},
     year = {1928},
     zbl = {54.0153.03},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1928__159_149669/}
}