%0 Journal Article %A V. B. Lidskii %A B. V. Fedosov %T Convergence to zero of the solutions of a second-order differential equation with operator coefficients %J Matematičeskie zametki %D 1967 %P 307-314 %V 2 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1967_2_3_a9/ %G ru %F MZM_1967_2_3_a9