TY  - JOUR
AU  - G. M. Buldyk
TI  - The number of Ljapunov constants for the conditions of the center of a certain differential equation
JO  - Differencialʹnye uravneniâ
PY  - 1974
SP  - 606
EP  - 612
VL  - 10
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1974_10_4_a4/
LA  - ru
ID  - DE_1974_10_4_a4
ER  -