Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{SF_1982__24_134551, author = {E.D. Ljapin}, title = {Identities valid globally in semigroups.}, journal = {Semigroup forum}, pages = {263--270}, publisher = {mathdoc}, volume = {24}, year = {1982}, url = {http://geodesic.mathdoc.fr/item/SF_1982__24_134551/} }
E.D. Ljapin. Identities valid globally in semigroups.. Semigroup forum, Tome 24 (1982), pp. 263-270. http://geodesic.mathdoc.fr/item/SF_1982__24_134551/