%0 Journal Article
%A L. A. Shemetkov
%T The product of formations of algebraic systems
%J Algebra i logika
%D 1984
%P 721-729
%V 23
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1984_23_6_a6/
%G ru
%F AL_1984_23_6_a6