%0 Journal Article
%A Drbohlav, Karel
%T A categorical generalization of a theorem of G. Birkhoff on primitive classes of universal algebras
%J Commentationes Mathematicae Universitatis Carolinae
%D 1965
%P 21-41
%V 06
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1965__6_1_a4/
%G en
%F CMUC_1965__6_1_a4