@article{MAN_1895__46_157764,
     author = {Otto H\"older},
     title = {Bildung zusammengesetzter {Gruppen}},
     journal = {Mathematische Annalen},
     pages = {321--422},
     year = {1895},
     volume = {46},
     zbl = {26.0160.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1895__46_157764/}
}