@article{MZ_1971__122_171604,
     author = {Carlton J. Maxson},
     title = {On {Groups} and {Endomorphism} {Rings.}},
     journal = {Mathematische Zeitschrift},
     pages = {294--298},
     year = {1971},
     volume = {122},
     zbl = {0209.33902},
     url = {http://geodesic.mathdoc.fr/item/MZ_1971__122_171604/}
}