@article{MAN_1933__107_159618,
     author = {H. Ulm},
     title = {Zur {Theorie} der abzahlbar-unendlichen {Abelschen} {Gruppen}},
     journal = {Mathematische Annalen},
     pages = {774--802},
     publisher = {mathdoc},
     volume = {107},
     year = {1933},
     zbl = {0006.15003},
     url = {http://geodesic.mathdoc.fr/item/MAN_1933__107_159618/}
}