%0 Journal Article %A A. M. Samoilenko %A O. D. Nurzhanov %T The Bubnov--Galerkin method for construction of periodic solutions of a Volterra type integro-differential equation %J Differencialʹnye uravneniâ %D 1979 %P 1503-1517 %V 15 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1979_15_8_a15/ %G ru %F DE_1979_15_8_a15