@article{01748347,
title = {On plane polynomial vector fields and the Poincar\'e problem.},
journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
volume = {2002},
year = {2002},
zbl = {1068.34506},
language = {en},
url = {http://dml.mathdoc.fr/item/01748347}
}
El Kahoui, M'hammed. On plane polynomial vector fields and the Poincaré problem.. Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 2002 (2002) . http://gdmltest.u-ga.fr/item/01748347/