%0 Journal Article %A F. G. Maksudov %A O. A. Veliev %T Nonselfadjoint differential operators in the space of vector-valued functions with periodic coefficients %J Doklady Akademii Nauk %D 1981 %P 26-30 %V 258 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1981_258_1_a4/ %G ru %F DAN_1981_258_1_a4