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Short Communications
Tests for the existence of limit cycles for systems of limit cycles for systems of the form $\dot{x}=y$, $\dot{y}=-\sum_{k=0}^n f_k(x)y^k$
E. D. Zhitelzeif Popov Higher Naval Academy of Radio Electronics
Received: 05.04.1974
Citation:
E. D. Zhitelzeif, “Tests for the existence of limit cycles for systems of limit cycles for systems of the form $\dot{x}=y$, $\dot{y}=-\sum_{k=0}^n f_k(x)y^k$”, Differ. Uravn., 11:9 (1975), 1702–1704
Linking options:
https://www.mathnet.ru/eng/de2558 https://www.mathnet.ru/eng/de/v11/i9/p1702
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