@article{GDZPPN002314312, title = {Unital Rings whose Additive Endomorphisms Commute.}, journal = {Mathematische Annalen}, volume = {229}, year = {1977}, pages = {197-214}, zbl = {0336.20040}, url = {http://dml.mathdoc.fr/item/GDZPPN002314312} }
Bowshell, R.A.; Schultz, P. Unital Rings whose Additive Endomorphisms Commute.. Mathematische Annalen, Tome 229 (1977) pp. 197-214. http://gdmltest.u-ga.fr/item/GDZPPN002314312/