TY  - JOUR
AU  - Ya. I. Bigun
AU  - A. M. Samoilenko
TI  - Justification of the averaging principle for multifrequency systems of differential equations with delay
JO  - Differencialʹnye uravneniâ
PY  - 1999
SP  - 8
EP  - 14
VL  - 35
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1999_35_1_a1/
LA  - ru
ID  - DE_1999_35_1_a1
ER  -