%0 Journal Article %A V. A. Taimanov %T On function systems in $k$-valued logic with closure operations of program type %J Doklady Akademii Nauk %D 1983 %P 1307-1310 %V 268 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1983_268_6_a6/ %G ru %F DAN_1983_268_6_a6