%0 Journal Article %A V. M. Gorbachuk %T Behavior at infinity of solutions of operator-differential %J Doklady Akademii Nauk %D 1989 %P 23-27 %V 308 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1989_308_1_a3/ %G ru %F DAN_1989_308_1_a3