%0 Journal Article
%A H.J. Shyr
%A D.C. Chu
%T Monoids of languages admitting ring structures.
%J Semigroup forum
%D 1980
%P 127-132
%V 19
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1980__19_134377/
%F SF_1980__19_134377