TY - JOUR AU - M. S. Almamedov TI - Spectrum of a fourth-order linear integro-differential operator JO - Doklady Akademii Nauk PY - 1988 SP - 525 EP - 529 VL - 299 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1988_299_3_a1/ LA - ru ID - DAN_1988_299_3_a1 ER -