%0 Journal Article
%A V.A. Fortunatov
%T Congruences on simple extensions of semigroups.
%J Semigroup forum
%D 1976
%P 283-296
%V 13
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1976__13_134223/
%F SF_1976__13_134223