@article{SF_1994__49_2_135352,
     author = {N. Kehayopulu},
     title = {On regular le-semigroups.},
     journal = {Semigroup forum},
     pages = {267--270},
     publisher = {mathdoc},
     volume = {49},
     number = {2},
     year = {1994},
     zbl = {0811.06014},
     url = {http://geodesic.mathdoc.fr/item/SF_1994__49_2_135352/}
}