@article{MZ_1955__62_169506,
     author = {Reinhold Baer},
     title = {Nilgruppen.},
     journal = {Mathematische Zeitschrift},
     pages = {402--437},
     publisher = {mathdoc},
     volume = {62},
     year = {1955},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1955__62_169506/}
}