%0 Journal Article %A V. A. Vasilenko %T Generalizing the invariance principle to linear automatic systems with variable parameters %J Doklady Akademii Nauk %D 1961 %P 324-326 %V 139 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_139_2_a16/ %G ru %F DAN_1961_139_2_a16