%0 Journal Article %A Yu. N. Valitskii %T Well-posedness of a multipoint problem for a differential equation with operator coefficients %J Doklady Akademii Nauk %D 1986 %P 1041-1043 %V 286 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1986_286_5_a2/ %G ru %F DAN_1986_286_5_a2