TY - JOUR AU - A. M. Samoilenko AU - O. D. Nurzhanov TI - The Bubnov--Galerkin method for construction of periodic solutions of a Volterra type integro-differential equation JO - Differencialʹnye uravneniâ PY - 1979 SP - 1503 EP - 1517 VL - 15 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1979_15_8_a15/ LA - ru ID - DE_1979_15_8_a15 ER -