Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{SF_1971__3_133860, author = {L. O'Carroll}, title = {A class of congruences on a posemigroup.}, journal = {Semigroup forum}, pages = {173--179}, publisher = {mathdoc}, volume = {3}, year = {1971}, url = {http://geodesic.mathdoc.fr/item/SF_1971__3_133860/} }
L. O'Carroll. A class of congruences on a posemigroup.. Semigroup forum, Tome 3 (1971), pp. 173-179. http://geodesic.mathdoc.fr/item/SF_1971__3_133860/