%0 Journal Article %A Yu. M. Semenov %T The problem of null-attainability of linear control systems with constant coefficients %J Differencialʹnye uravneniâ %D 1982 %P 1869-1878 %V 18 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1982_18_11_a3/ %G ru %F DE_1982_18_11_a3