@article{GDZPPN001254111,
title = {Lattice isomorphisms of commutative relatively free semigroups.},
journal = {Semigroup forum},
volume = {20},
year = {1980},
pages = {189-226},
zbl = {0487.20037},
url = {http://dml.mathdoc.fr/item/GDZPPN001254111}
}
Ovsyannikov, A.J. Lattice isomorphisms of commutative relatively free semigroups.. Semigroup forum, Tome 20 (1980) pp. 189-226. http://gdmltest.u-ga.fr/item/GDZPPN001254111/