Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{SF_1979__17_134326, author = {Z. Shmuely}, title = {Idempotents in completely {PO} semigroups.}, journal = {Semigroup forum}, pages = {317--324}, publisher = {mathdoc}, volume = {17}, year = {1979}, zbl = {0429.06004}, url = {http://geodesic.mathdoc.fr/item/SF_1979__17_134326/} }
Z. Shmuely. Idempotents in completely PO semigroups.. Semigroup forum, Tome 17 (1979), pp. 317-324. http://geodesic.mathdoc.fr/item/SF_1979__17_134326/