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has been cited by the following article:
TITLE: Periodic Solutions of a Class of Second-Order Differential Equation
AUTHORS: Zeyneb Bouderbala, Jaume Llibre, Amar Makhlouf
KEYWORDS: Periodic Solution, Differential Equation, Averaging Theory
JOURNAL NAME: Applied Mathematics, Vol.7 No.3, February 29, 2016
ABSTRACT: We study the periodic solutions of the second-order differential equations of the form where the functions, , and are periodic of period in the variable t.