Geodesic
Methods for estimating the number of limit cycles of autonomous systems
Differencialʹnye uravneniâ, Tome 13 (1977) no. 5, pp. 779-802.

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

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     author = {L. A. Cherkas},
     title = {Methods for estimating the number of limit cycles of autonomous systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {779--802},
     publisher = {mathdoc},
     volume = {13},
     number = {5},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_5_a0/}
}
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L. A. Cherkas. Methods for estimating the number of limit cycles of autonomous systems. Differencialʹnye uravneniâ, Tome 13 (1977) no. 5, pp. 779-802. http://geodesic.mathdoc.fr/item/DE_1977_13_5_a0/