%0 Journal Article
%A Ya. I. Bigun
%A A. M. Samoilenko
%T Justification of the averaging principle for multifrequency systems of differential equations with delay
%J Differencialʹnye uravneniâ
%D 1999
%P 8-14
%V 35
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1999_35_1_a1/
%G ru
%F DE_1999_35_1_a1