@article{GDZPPN001264591, title = {Epis from locally inverse semigroups are onto.}, journal = {Semigroup forum}, volume = {53}, year = {1996}, pages = {49-54}, zbl = {0840.20066}, url = {http://dml.mathdoc.fr/item/GDZPPN001264591} }
Higgins, P.M. Epis from locally inverse semigroups are onto.. Semigroup forum, Tome 53 (1996) pp. 49-54. http://gdmltest.u-ga.fr/item/GDZPPN001264591/