%0 Journal Article
%A O. Steinfeld
%T Quasi-ideals in rings and semigroups
%J Semigroup forum
%D 1980
%P 371-372
%V 19
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1980__19_134396/
%F SF_1980__19_134396