TY  - JOUR
AU  - G. M. Buldyk
TI  - A remark on the number of Ljapunov constants for conditions for a center of a certain differential equation
JO  - Differencialʹnye uravneniâ
PY  - 1976
SP  - 1301
EP  - 1302
VL  - 12
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1976_12_7_a17/
LA  - ru
ID  - DE_1976_12_7_a17
ER  -