TY  - JOUR
AU  - A. A. Panov
TI  - The number of periodic solutions of polynomial differential equations
JO  - Matematičeskie zametki
PY  - 1998
SP  - 720
EP  - 727
VL  - 64
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1998_64_5_a8/
LA  - ru
ID  - MZM_1998_64_5_a8
ER  -