@article{GDZPPN00126186X,
title = {Perfect elements in Dubreil-Jacotin regular semigroups.},
journal = {Semigroup forum},
volume = {44},
year = {1992},
pages = {55-62},
zbl = {0778.06012},
url = {http://dml.mathdoc.fr/item/GDZPPN00126186X}
}
Blyth, T.S.; Giraldes, E. Perfect elements in Dubreil-Jacotin regular semigroups.. Semigroup forum, Tome 44 (1992) pp. 55-62. http://gdmltest.u-ga.fr/item/GDZPPN00126186X/