The uniqueness of the limit cycle of the system $\dot y=-g(x)$, $\dot x=-f(x)$
Differencialʹnye uravneniâ, Tome 5 (1969) no. 3, pp. 563-564
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@article{DE_1969_5_3_a17,
author = {G. S. Rychkov},
title = {The uniqueness of the limit cycle of the system $\dot y=-g(x)$, $\dot x=-f(x)$},
journal = {Differencialʹnye uravneni\^a},
pages = {563--564},
year = {1969},
volume = {5},
number = {3},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DE_1969_5_3_a17/}
}
G. S. Rychkov. The uniqueness of the limit cycle of the system $\dot y=-g(x)$, $\dot x=-f(x)$. Differencialʹnye uravneniâ, Tome 5 (1969) no. 3, pp. 563-564. http://geodesic.mathdoc.fr/item/DE_1969_5_3_a17/