TY  - JOUR
AU  - Hoang Van Tao
TI  - On the generalization of a certain theorem of N. N. Bogoljubov on averaging
JO  - Differencialʹnye uravneniâ
PY  - 1970
SP  - 555
EP  - 557
VL  - 6
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1970_6_3_a18/
LA  - ru
ID  - DE_1970_6_3_a18
ER  -