TY  - JOUR
AU  - E. P. Sobolevskii
TI  - An averaging principle and stability of differential equations with a small parameter
JO  - Differencialʹnye uravneniâ
PY  - 1979
SP  - 1444
EP  - 1449
VL  - 15
IS  - 8
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1979_15_8_a9/
LA  - ru
ID  - DE_1979_15_8_a9
ER  -