The absence in the equation $P_1(x,y)dx=(y-P_3(x))dy$ of limit cycles surrounding three singular points
Differencialʹnye uravneniâ, Tome 20 (1984) no. 11, pp. 1906-1910
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@article{DE_1984_20_11_a7,
author = {G. S. Rychkov},
title = {The absence in the equation $P_1(x,y)dx=(y-P_3(x))dy$ of limit cycles surrounding three singular points},
journal = {Differencialʹnye uravneni\^a},
pages = {1906--1910},
year = {1984},
volume = {20},
number = {11},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DE_1984_20_11_a7/}
}
TY - JOUR AU - G. S. Rychkov TI - The absence in the equation $P_1(x,y)dx=(y-P_3(x))dy$ of limit cycles surrounding three singular points JO - Differencialʹnye uravneniâ PY - 1984 SP - 1906 EP - 1910 VL - 20 IS - 11 UR - http://geodesic.mathdoc.fr/item/DE_1984_20_11_a7/ LA - ru ID - DE_1984_20_11_a7 ER -
G. S. Rychkov. The absence in the equation $P_1(x,y)dx=(y-P_3(x))dy$ of limit cycles surrounding three singular points. Differencialʹnye uravneniâ, Tome 20 (1984) no. 11, pp. 1906-1910. http://geodesic.mathdoc.fr/item/DE_1984_20_11_a7/