@article{MZ_1929__29_168056,
     author = {Otto Schmidt},
     title = {\"Uber unendliche {Gruppen} mit endlicher {Kette.}},
     journal = {Mathematische Zeitschrift},
     pages = {34--41},
     year = {1929},
     volume = {29},
     zbl = {54.0148.03},
     url = {http://geodesic.mathdoc.fr/item/MZ_1929__29_168056/}
}