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- W1997392203 abstract "Abstract In this article, we study the limit cycles of the fourth-order differential equation where ϵ is a small enough parameter and is a 2π-periodic function in the variable t. Keywords: limit cyclefourth-order differential equationperturbation of centresaveraging theoryAMS Subject Classifications:: 37G1537D45 Acknowledgement J. Llibre is partially supported by a MCYT/FEDER grant number MTM03437 and by a CICYT grant number 2009SGR 410." @default.
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- W1997392203 date "2009-11-17" @default.
- W1997392203 modified "2023-10-11" @default.
- W1997392203 title "Limit cycles for a class of fourth-order differential equations" @default.
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- W1997392203 doi "https://doi.org/10.1080/00036810903114833" @default.
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