@article{GDZPPN001262076, title = {On some problems of Petrich concerning Br\"uck and Reilly semigroups.}, journal = {Semigroup forum}, volume = {44}, year = {1992}, pages = {283-287}, zbl = {0787.20037}, url = {http://dml.mathdoc.fr/item/GDZPPN001262076} }
Ismaeel, A. Ali. On some problems of Petrich concerning Brück and Reilly semigroups.. Semigroup forum, Tome 44 (1992) pp. 283-287. http://gdmltest.u-ga.fr/item/GDZPPN001262076/