@article{MZ_1929__29_168054,
     author = {Wilhelm D\"ornte},
     title = {Untersuchungen \"uber einen verallgemeinerten {Gruppenbegriff}},
     journal = {Mathematische Zeitschrift},
     pages = {1--19},
     publisher = {mathdoc},
     volume = {29},
     year = {1929},
     zbl = {54.0152.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1929__29_168054/}
}