Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1987__37_2_a2, author = {Kossaczk\'y, Igor}, title = {Green's relations and regular elements of transformation semigroups}, journal = {Mathematica slovaca}, pages = {159--168}, publisher = {mathdoc}, volume = {37}, number = {2}, year = {1987}, mrnumber = {899431}, zbl = {0613.20043}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1987__37_2_a2/} }
Kossaczký, Igor. Green's relations and regular elements of transformation semigroups. Mathematica slovaca, Tome 37 (1987) no. 2, pp. 159-168. http://geodesic.mathdoc.fr/item/MASLO_1987__37_2_a2/