Geodesic
Tests for the existence of limit cycles for systems of limit cycles for systems of the form $\dot{x}=y$, $\dot{y}=-\sum_{k=0}^n f_k(x)y^k$
Differencialʹnye uravneniâ, Tome 11 (1975) no. 9, pp. 1702-1704.

Voir la notice de l'article provenant de la source Math-Net.Ru

@article{DE_1975_11_9_a19,
     author = {E. D. Zhitelzeif},
     title = {Tests for the existence of limit cycles for systems of limit cycles for systems of the form $\dot{x}=y$, $\dot{y}=-\sum_{k=0}^n f_k(x)y^k$},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1702--1704},
     publisher = {mathdoc},
     volume = {11},
     number = {9},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_9_a19/}
}
TY  - JOUR
AU  - E. D. Zhitelzeif
TI  - Tests for the existence of limit cycles for systems of limit cycles for systems of the form $\dot{x}=y$, $\dot{y}=-\sum_{k=0}^n f_k(x)y^k$
JO  - Differencialʹnye uravneniâ
PY  - 1975
SP  - 1702
EP  - 1704
VL  - 11
IS  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1975_11_9_a19/
LA  - ru
ID  - DE_1975_11_9_a19
ER  - 
%0 Journal Article
%A E. D. Zhitelzeif
%T Tests for the existence of limit cycles for systems of limit cycles for systems of the form $\dot{x}=y$, $\dot{y}=-\sum_{k=0}^n f_k(x)y^k$
%J Differencialʹnye uravneniâ
%D 1975
%P 1702-1704
%V 11
%N 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1975_11_9_a19/
%G ru
%F DE_1975_11_9_a19
E. D. Zhitelzeif. Tests for the existence of limit cycles for systems of limit cycles for systems of the form $\dot{x}=y$, $\dot{y}=-\sum_{k=0}^n f_k(x)y^k$. Differencialʹnye uravneniâ, Tome 11 (1975) no. 9, pp. 1702-1704. http://geodesic.mathdoc.fr/item/DE_1975_11_9_a19/