TY  - JOUR
AU  - V. G. Romanovsky
TI  - On the finiteness of the number of limit cycles in a quadratic system
JO  - Differencialʹnye uravneniâ
PY  - 1988
SP  - 1904
EP  - 1911
VL  - 24
IS  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1988_24_11_a7/
LA  - ru
ID  - DE_1988_24_11_a7
ER  -