TY - JOUR AU - F. G. Maksudov AU - O. A. Veliev TI - Nonselfadjoint differential operators in the space of vector-valued functions with periodic coefficients JO - Doklady Akademii Nauk PY - 1981 SP - 26 EP - 30 VL - 258 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1981_258_1_a4/ LA - ru ID - DAN_1981_258_1_a4 ER -