@article{1103037140, author = {Losey, Gerald and Schneider, Hans}, title = {Group membership in rings and semigroups.}, journal = {Pacific J. Math.}, volume = {11}, number = {4}, year = {1961}, pages = { 1089-1098}, language = {en}, url = {http://dml.mathdoc.fr/item/1103037140} }
Losey, Gerald; Schneider, Hans. Group membership in rings and semigroups.. Pacific J. Math., Tome 11 (1961) no. 4, pp. 1089-1098. http://gdmltest.u-ga.fr/item/1103037140/