%0 Journal Article
%A Alfred L. Foster
%T Congruence Relations and Functional Completeness in Universal Algebras; Structure Theory of Hemi-Primals, I.
%J Mathematische Zeitschrift
%D 1970
%P 293-308
%V 113
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1970__113_171277/
%F MZ_1970__113_171277