%0 Journal Article %A M. G. Gimadislamov %T The eigenfunction expansion of non-selfadjoint systems of second-order differential equations %J Doklady Akademii Nauk %D 1961 %P 19-22 %V 140 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_140_1_a3/ %G ru %F DAN_1961_140_1_a3