%0 Journal Article %A V. A. Yakubovich %T On the dynamic stability of elastic systems %J Doklady Akademii Nauk %D 1958 %P 602-605 %V 121 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1958_121_4_a7/ %G ru %F DAN_1958_121_4_a7