%0 Journal Article
%A V.M. Sirjaev
%T Semilattices of width 2.
%J Semigroup forum
%D 1976
%P 149-177
%V 13
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1976__13_134207/
%F SF_1976__13_134207