%0 Journal Article
%A S. Ligh
%A P. Jones
%T Quasi ring-semigroups.
%J Semigroup forum
%D 1979
%P 163-174
%V 17
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1979__17_134315/
%F SF_1979__17_134315