@article{MZ_1976__151_172438,
     author = {Martin L. Newell},
     title = {Normal and {Power} {Endomorphisms} of a {Group.}},
     journal = {Mathematische Zeitschrift},
     pages = {139--142},
     publisher = {mathdoc},
     volume = {151},
     year = {1976},
     zbl = {0324.20044},
     url = {http://geodesic.mathdoc.fr/item/MZ_1976__151_172438/}
}