TY - JOUR AU - V. V. Kornienko TI - On the Spectrum of Degenerate Operator Equations JO - Matematičeskie zametki PY - 2000 SP - 677 EP - 691 VL - 68 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2000_68_5_a4/ LA - ru ID - MZM_2000_68_5_a4 ER -