@article{JRAM_1964__0214_0215_150612,
     author = {Reinhold Baer},
     title = {Der reduzierte {Rang} einer {Gruppe.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {146--173},
     publisher = {mathdoc},
     volume = {0214_0215},
     year = {1964},
     zbl = {0125.28603},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1964__0214_0215_150612/}
}