%0 Journal Article
%A Yu. Ya. Breitbart
%T Essential variables of functions of the algebra of logic
%J Doklady Akademii Nauk
%D 1967
%P 9-10
%V 172
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1967_172_1_a0/
%G ru
%F DAN_1967_172_1_a0