@article{MZ_1966__92_170559,
     author = {Wolfgang Schwarz},
     title = {\"Uber die {Anzahl} {Abelscher} {Gruppen} gegebener {Ordnung.} {I.}},
     journal = {Mathematische Zeitschrift},
     pages = {314--320},
     publisher = {mathdoc},
     volume = {92},
     year = {1966},
     zbl = {0136.28901},
     url = {http://geodesic.mathdoc.fr/item/MZ_1966__92_170559/}
}