@article{GDZPPN001248103, title = {Bisimple left inverse semigroups.}, journal = {Semigroup forum}, volume = {4}, year = {1972}, pages = {34-45}, zbl = {0275.20114}, url = {http://dml.mathdoc.fr/item/GDZPPN001248103} }
Venkatesan, P.S. Bisimple left inverse semigroups.. Semigroup forum, Tome 4 (1972) pp. 34-45. http://gdmltest.u-ga.fr/item/GDZPPN001248103/