TY - JOUR AU - G. M. Gubreev TI - Spectral analysis of the differentiation operator and the JO - Doklady Akademii Nauk PY - 1984 SP - 1052 EP - 1056 VL - 278 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1984_278_5_a5/ LA - ru ID - DAN_1984_278_5_a5 ER -