%0 Journal Article %A A. G. Butkovskiy %T Finite control over distributed linear systems %J Doklady Akademii Nauk %D 1969 %P 538-541 %V 188 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_188_3_a11/ %G ru %F DAN_1969_188_3_a11