Differencialʹnye uravneniâ, Tome 9 (1973) no. 4, pp. 650-659
Citer cet article
A. P. Sadovskii. The problem of distinguishing the center and the focus. Differencialʹnye uravneniâ, Tome 9 (1973) no. 4, pp. 650-659. http://geodesic.mathdoc.fr/item/DE_1973_9_4_a8/
@article{DE_1973_9_4_a8,
author = {A. P. Sadovskii},
title = {The problem of distinguishing the center and the focus},
journal = {Differencialʹnye uravneni\^a},
pages = {650--659},
year = {1973},
volume = {9},
number = {4},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DE_1973_9_4_a8/}
}
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AU - A. P. Sadovskii
TI - The problem of distinguishing the center and the focus
JO - Differencialʹnye uravneniâ
PY - 1973
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EP - 659
VL - 9
IS - 4
UR - http://geodesic.mathdoc.fr/item/DE_1973_9_4_a8/
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