A note on the saddle conic of quadratic planar differential systems.
Boularas, D.
Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 2000 (2000), / Harvested from The Electronic Library of Mathematics
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Publié le : 2000-01-01
EUDML-ID : urn:eudml:doc:120573 
@article{01431760,
     title = {A note on the saddle conic of quadratic planar differential systems.},
     journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
     volume = {2000},
     year = {2000},
     zbl = {0947.34012},
     language = {en},
     url = {http://dml.mathdoc.fr/item/01431760}
}

Boularas, D. A note on the saddle conic of quadratic planar differential systems.. Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 2000 (2000) . http://gdmltest.u-ga.fr/item/01431760/