Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{SF_1980__20_134415, author = {A.J. Ovsyannikov}, title = {Lattice isomorphisms of commutative relatively free semigroups.}, journal = {Semigroup forum}, pages = {189--226}, publisher = {mathdoc}, volume = {20}, year = {1980}, zbl = {0487.20037}, url = {http://geodesic.mathdoc.fr/item/SF_1980__20_134415/} }
A.J. Ovsyannikov. Lattice isomorphisms of commutative relatively free semigroups.. Semigroup forum, Tome 20 (1980), pp. 189-226. http://geodesic.mathdoc.fr/item/SF_1980__20_134415/