%0 Journal Article
%A R. V. Freivald
%T The completeness to within coding of systems of functions of a $k$-valued logic and the complexity of its recognition
%J Doklady Akademii Nauk
%D 1968
%P 803-805
%V 180
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1968_180_4_a8/
%G ru
%F DAN_1968_180_4_a8