Differentsial'nye Uravneniya
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Differentsial'nye Uravneniya, 1973, Volume 9, Number 8, Pages 1540–1542 (Mi de1990)  
Short Communications

A proof of the presence of an infinite number of limit cycles for the equation $\ddot y+\mu\ sin$ $(\dot y+\theta )+y=0$

G. S. Rychkov

Moscow
Full-text PDF (283 kB)
Received: 07.04.1972
Bibliographic databases:
Document Type: Article
UDC: 517.925.12
Language: Russian
Citation: G. S. Rychkov, “A proof of the presence of an infinite number of limit cycles for the equation $\ddot y+\mu\ sin$ $(\dot y+\theta )+y=0$”, Differ. Uravn., 9:8 (1973), 1540–1542
Citation in format AMSBIB
\Bibitem{Ryc73}
\by G.~S.~Rychkov
\paper A proof of the presence of an infinite number of limit cycles for the equation $\ddot y+\mu\ sin$ $(\dot y+\theta )+y=0$
\jour Differ. Uravn.
\yr 1973
\vol 9
\issue 8
\pages 1540--1542
\mathnet{http://mi.mathnet.ru/de1990}
\mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=361268}
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