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On a continuation lemma for the study of a certain planar system with applications to liénard and rayleigh equations

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Dedicated to Prof. Dr. R. Reissig on the occasion of his 65th birthday.

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Omari, P., Villari, G. On a continuation lemma for the study of a certain planar system with applications to liénard and rayleigh equations. Results. Math. 14, 156–173 (1988). https://doi.org/10.1007/BF03323223

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