%0 Journal Article
%A B. Biró
%A E.W. Kiss
%A P.P. Palfy
%T On the congruence extension property.
%J Semigroup forum
%D 1977
%P 183-184
%V 15
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1977__15_134249/
%F SF_1977__15_134249