[1] G.Q. Wang, “Periodic solutions of a neutral differential equation with piecewise constant arguments,” J. Math. Anal. Appl., vol. 326, pp. 736-747, 2007.
[2] M.U. Akhmet, “On the reduction principle for differential equations with piecewise constant argument of generalized type,” J. Math. Anal. Appl., vol. 336, pp. 646-663, 2007.
[3] M.U. Akhmet, “Asymptotic behavior of solutions of differential equations with piecewise constant arguments,” Appl. Math. Lett.., vol. 21, pp. 951-956, 2008.
[4] M.U. Akhmet, “Stability of differential equations with piecewise constant arguments of generalized type,” Nonlinear Anal., vol.68, pp. 794-803, 2008.
[5] D. Altintan, “Extension of the logistic equation with piecewise constant arguments and population dynamics,” M.Sc.Thesis, Middle East Technical University, 2006.
[6] K.L. Cooke and J. Weiner, “A survey of differential equation with piecewise continuous argument,” Lecture Notes in Mathematics, Springer, Berlin, 1991.
[7] L. Dai and L. Fan, “Analytical and numerical approaches to characteristics of linear and nonlinear vibratory systems under piecewise discontinuous disturbances,” Commun. Nonlinear Sci. Numer. Simul., vol. 9, pp. 417–429, 2004.
[8] F. Gurcan and F. Bozkurt, “Global stability in a population model with piecewise constant arguments,”J. Math. Anal. Appl., vol. 360, pp. 334–342, 2009.
[9] K.L. Cooke and J. Wiener, “Retarded differential equations with piecewise constant delays,” J. Math. Anal. Appl., vol. 99, pp. 265–297, 1984.
[10] S.M. Shah and J. Wiener, “Advanced differential equations with piecewise constant argument deviations,” Int. J. Math. Math. Sci., vol. 6, pp. 671–703, 1983.
[11] A.F. Ivanov, “Global dynamics of a differential equation with piecewise constant argument,” Nonlinear Anal., vol. 71, pp. e2384–e2389, 2009.
[12] Y. Muroya, “New contractivity condition in a population model with piecewise constant arguments,” J. Math. Anal. Appl., vol. 346, pp. 65–81, 2008.
[13] Y.H. Xia, Z.K. Huang, and M.A. Han, “Existence of almost periodic solutions for forced perturbed systems with piecewise constant argument,” J. Math. Anal. Appl., vol. 333, pp. 798–816, 2007.
[14] J. Wiener, Generalized Solutions of Functional Differential Equations, Singapore: World Scientific, 1993.
[15] M.H. Song, Z.W. Yang, and M.Z. Liu, “Stability of -methods for advanced differential equations with piecewise continuous arguments,”Comput.Math. Appl., vol. 49, pp. 1295-1301, 2005.
[16] M.Z. Liu, S.F. Ma, and Z.W. Yang, “Stability analysis of Runge-Kutta methods for unbounded retarded differential equations with piecewise continuous arguments,” Appl. Math. Comput.., vol. 191, pp. 57-66, 2007.
[17] Q. Wang, Q.Y. Zhu, and M.Z. Liu, “Stability and oscillations of numerical solutions of differential equations with piecewise continuous arguments of alternately advanced and retarded type,” J. Comput. Appl. Math.., vol. 235, pp. 1542-1552, 2011.
[18] J.H. He, “Variational iteration method-A kind of non-linear analytical technique: Some examples,” Internat. J. Non-Linear Mech., vol. 34, no. 4, pp. 699-708, 1999.
[19] J.H. He, “Variational iteration method-Some recent results and new interpretations,” J. Comput. Appl. Math.., vol. 207, no. 1, pp. 3-17, 2007.
[20] J.H. He and X.H. Wu, “Variational iteration method: New development and applications,"Comput. Math. Appl., vol. 54, no.7-8, pp. 881-894, 2007.
[21] J.H. He, G.C. Wu, and F. Austin, “The variational iteration method which should be followed,” Nonlinear Sci. Lett. A, vol. 1, no.1, pp. 1-30, 2010.
[22] M.M. Al-Sawalha, M.S.M. Noorani, and I. Hashim, “On accuracy of Adomian decompositionmethod for hyperchaotic Rössler system,” Chaos Solitons Fractals., vol. 40, no.4, pp. 1801-1807, 2009.
[23] M.M. Al-Sawalha and M.S.M. Noorani, “Application of the differential transformation method for the solution of the hyperchaotic Rössler system,” Comm. Non. Sci. Num. Simu., vol. 14, pp. 1509-1514, 2009.
[24] F.M. Allan, “Construction of analytic solution to chaotic dynamical systems using the Homotopy analysis method,” Chaos Solitons Fractals., vol. 39, no.4, pp. 1744-1752, 2009.
[25] J.H. He, “Homotopy perturbation method for bifurcation of nonlinear problems,” Int. J. Nonlinear Sci. Numer. Simu., vol. 6, pp. 207-208, 2005.
[26] J.H. He, “Some asymptotic methods for strongly nonlinear equations,” Int. J. Modern Phys.B, vol. 20, no.10, pp. 1141–1199, 2006.
[27] J.H. He, “Approximate analytical solution for seepage flow with fractional derivatives in porous media,” Comput. Meth. Appl. Mech. Eng., vol. 167, pp. 57–68, 1998.
[28] J.H. He, “Variational iteration method for autonomous ordinary differential systems,” Appl. Math. Comput.., vol. 114, pp. 115–123, 2000.
[29] J.H. He, “An elementary introduction to recently developed asymptotic methods and nanomechanics in textile engineering,” Int. J. Modern Phys.B, vol. 22, no.21, pp. 3487–3578, 2008.