Adivar, Murat, and Youssef Raffoul. “Existence of Periodic Solutions in Totally Nonlinear Delay Dynamic Equations”. Electronic Journal of Qualitative Theory of Differential Equations, no. 1, 2009, pp. 1-20, https://doi.org/10.14232/ejqtde.2009.4.1.
Adivar, M., & Raffoul, Y. (2009). Existence of periodic solutions in totally nonlinear delay dynamic equations. Electronic Journal of Qualitative Theory of Differential Equations, 1, 1-20. https://doi.org/10.14232/ejqtde.2009.4.1
Adivar M, Raffoul Y. Existence of periodic solutions in totally nonlinear delay dynamic equations. Electronic Journal of Qualitative Theory of Differential Equations. 2009;(1):1-20.