Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_1981_11_Nonea_24, author = {Bogdanovi\'c Stojan}, title = {Semigroups in {Which} some bi-ideal is a group}, journal = {Novi Sad Journal of Mathematics}, pages = {261-266}, publisher = {mathdoc}, volume = {11}, year = {1981}, url = {http://geodesic.mathdoc.fr/item/NSJOM_1981_11_Nonea_24/} }
Bogdanović Stojan. Semigroups in Which some bi-ideal is a group. Novi Sad Journal of Mathematics, Tome 11 (1981). http://geodesic.mathdoc.fr/item/NSJOM_1981_11_Nonea_24/