TY - JOUR AU - M. G. Gasymov AU - F. G. Maksudov TI - The principal part of the resolvent of non-self-adjoint operators in a neighborhood of spectral singularities JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1972 SP - 16 EP - 24 VL - 6 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1972_6_3_a2/ LA - ru ID - FAA_1972_6_3_a2 ER -