Wang Weibing & Luo Yan. (2013). Periodic solutions for a class of second order differential equations.
Chicago Style (17th ed.) CitationWang Weibing and Luo Yan. Periodic Solutions for a Class of Second Order Differential Equations. 2013.
MLA idézésWang Weibing and Luo Yan. Periodic Solutions for a Class of Second Order Differential Equations. 2013.
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