%0 Journal Article %A V. Y. Belozerov %A G. V. Mozhaev %T Minimal possible number of controls in a linear time-invariant control system %J Differencialʹnye uravneniâ %D 1981 %P 589-597 %V 17 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1981_17_4_a1/ %G ru %F DE_1981_17_4_a1