%0 Journal Article
%A A.J. Ovsyannikov
%T Lattice isomorphisms of commutative relatively free semigroups.
%J Semigroup forum
%D 1980
%P 189-226
%V 20
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1980__20_134415/
%F SF_1980__20_134415