@article{1256053082, author = {Mueller, Bruno J.}, title = {On semi-perfect rings}, journal = {Illinois J. Math.}, volume = {14}, number = {4}, year = {1970}, pages = { 464-467}, language = {en}, url = {http://dml.mathdoc.fr/item/1256053082} }
Mueller, Bruno J. On semi-perfect rings. Illinois J. Math., Tome 14 (1970) no. 4, pp. 464-467. http://gdmltest.u-ga.fr/item/1256053082/