TY - JOUR AU - Ya. V. Mikityuk TI - Spectral theory of a class of nonselfadjoint operators JO - Doklady Akademii Nauk PY - 1980 SP - 40 EP - 43 VL - 252 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1980_252_1_a9/ LA - ru ID - DAN_1980_252_1_a9 ER -