Tests for the existence of the center, and its isochronism
Differencialʹnye uravneniâ, Tome 10 (1974) no. 4, pp. 585-590
Cet article a éte moissonné depuis la source Math-Net.Ru
@article{DE_1974_10_4_a1,
author = {V. V. Amel'kin and N. A. Lukashevich},
title = {Tests for the existence of the center, and its isochronism},
journal = {Differencialʹnye uravneni\^a},
pages = {585--590},
year = {1974},
volume = {10},
number = {4},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DE_1974_10_4_a1/}
}
V. V. Amel'kin; N. A. Lukashevich. Tests for the existence of the center, and its isochronism. Differencialʹnye uravneniâ, Tome 10 (1974) no. 4, pp. 585-590. http://geodesic.mathdoc.fr/item/DE_1974_10_4_a1/