%0 Journal Article
%A S. Ligh
%T On a class of semigroups admitting ring structure.
%J Semigroup forum
%D 1976
%P 37-46
%V 13
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1976__13_134195/
%F SF_1976__13_134195