A Special Dulac Function for a Quadratic System on the Plane
Differencialʹnye uravneniâ, Tome 37 (2001) no. 4, pp. 481-487.

Voir la notice de l'article provenant de la source Math-Net.Ru

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     author = {L. A. Cherkas and I. S. Shchukina},
     title = {A {Special} {Dulac} {Function} for a {Quadratic} {System} on the {Plane}},
     journal = {Differencialʹnye uravneni\^a},
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     year = {2001},
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     url = {http://geodesic.mathdoc.fr/item/DE_2001_37_4_a6/}
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L. A. Cherkas; I. S. Shchukina. A Special Dulac Function for a Quadratic System on the Plane. Differencialʹnye uravneniâ, Tome 37 (2001) no. 4, pp. 481-487. http://geodesic.mathdoc.fr/item/DE_2001_37_4_a6/