%0 Journal Article
%A A. G. Butkovskiy
%T Finite control and controllability in distributed systems
%J Doklady Akademii Nauk
%D 1970
%P 1247-1248
%V 191
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1970_191_6_a13/
%G ru
%F DAN_1970_191_6_a13