Geodesic
Partition of the parameter space of a quadratic system with a triple focus or a center at the origin
Differencialʹnye uravneniâ, Tome 34 (1998) no. 4, pp. 441-450.

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     author = {E. A. Andronova},
     title = {Partition of the parameter space of a quadratic system with a triple focus or a center at the origin},
     journal = {Differencialʹnye uravneni\^a},
     pages = {441--450},
     publisher = {mathdoc},
     volume = {34},
     number = {4},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_4_a1/}
}
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E. A. Andronova. Partition of the parameter space of a quadratic system with a triple focus or a center at the origin. Differencialʹnye uravneniâ, Tome 34 (1998) no. 4, pp. 441-450. http://geodesic.mathdoc.fr/item/DE_1998_34_4_a1/