@article{GDZPPN00228846X, title = {On Rings in which an (a) = a.}, journal = {Mathematische Annalen}, volume = {141}, year = {1960}, pages = {324-333}, zbl = {0091.03303}, url = {http://dml.mathdoc.fr/item/GDZPPN00228846X} }
FOSTER, A.L.; SUSSMAN, I. On Rings in which an (a) = a.. Mathematische Annalen, Tome 141 (1960) pp. 324-333. http://gdmltest.u-ga.fr/item/GDZPPN00228846X/