@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/