Positive Periodic Solutions of Nonlinear First-Order Functional Difference Equations

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He, T. S., Lu, Y. M., Lei, Y. F., & Yang, F. J. (2011). Nontrivial Periodic Solutions for Nonlinear Second-Order Difference Equations. Discrete Dynamics in Nature and Society, 2011(), 58-71. https://doi.org/10.1155/2011/153082
Liu, Z. Q., Li, X., Kang, S. M., & Kwun, Y. C. (2012). Positive Periodic Solutions for First-Order Neutral Functional Differential Equations with Periodic Delays. Abstract and Applied Analysis, 2012(), 1230-1241. https://doi.org/10.1155/2012/185692
Wang, Q., Guo, Y., & Ji, Y. (2013). Positive Solutions for Fourth-Order Nonlinear Differential Equation with Integral Boundary Conditions. Discrete Dynamics in Nature and Society, 2013(), 525-534-161. https://doi.org/10.1155/2013/684962
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