Multiple periodic solutions to a class of second-order nonlinear mixed-type functional differential equations.
Shu, Xiao-Bao, Xu, Yuan-Tong (2005)
International Journal of Mathematics and Mathematical Sciences
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Shu, Xiao-Bao, Xu, Yuan-Tong (2005)
International Journal of Mathematics and Mathematical Sciences
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Han, Zhiqing (2010)
Boundary Value Problems [electronic only]
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El Ouardi, Hamid (2009)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Wang, Genqiang, Yan, Jurang (2001)
Journal of Applied Mathematics and Stochastic Analysis
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Cheng, Rong, Hu, Jianhua (2010)
Abstract and Applied Analysis
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Zhang, Peng, Tang, Chun-Lei (2010)
Abstract and Applied Analysis
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Jung, Tacksun, Choi, Q-Hueng (2008)
Boundary Value Problems [electronic only]
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Schechter, Martin (2006)
Boundary Value Problems [electronic only]
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Jung, Tacksun, Choi, Q-Heung (2010)
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Jin-Zhi Liu, Zhi-Yuan Jiang, Ai-Xiang Wu (2008)
Applications of Mathematics
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This paper is concerned with periodic solutions of first-order nonlinear functional differential equations with deviating arguments. Some new sufficient conditions for the existence of periodic solutions are obtained. The paper extends and improves some well-known results.