@article{MZ_1953__59_169394,
     author = {Reinhold Baer},
     title = {Das {Hyperzentrum} einer {Gruppe.} {III.}},
     journal = {Mathematische Zeitschrift},
     pages = {299--338},
     publisher = {mathdoc},
     volume = {59},
     year = {1953},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1953__59_169394/}
}