%0 Journal Article %A V. A. Bezverkhnii %T Eigenfunction expansion of a~certain differential operator in a~space of vector-valued functions %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1975 %V 30 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1975_30_1_a9/ %G ru %F RM_1975_30_1_a9