Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{PORMA_1968__27_4_115075, author = {Ehrlich, Gertrude}, title = {Unit-regular rings}, journal = {Portugaliae mathematica}, pages = {209--212}, publisher = {mathdoc}, volume = {27}, number = {4}, year = {1968}, mrnumber = {0266962}, zbl = {0201.03901}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1968__27_4_115075/} }
Ehrlich, Gertrude. Unit-regular rings. Portugaliae mathematica, Tome 27 (1968) no. 4, pp. 209-212. http://geodesic.mathdoc.fr/item/PORMA_1968__27_4_115075/