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• Greiner, W., (2000), Relativistic Quantum Mechanics-Wave Equations, 3rd edition, Springer-Verlag, Berlin.
• Dehghan, M. and Shokri, A., (2009), Numerical solution of the nonlinear Klein-Gordon equation using radial basis functions, Journal of Computational and Applied Mathematics, 230 (2), pp 400-410.
• Biswas, A., Yildirim, A., Hayat, T., Aldossary, O.M. and Sassaman, R., (2012), Soliton perturbation theory for the generalized Klein-Gordon equation with full nonlinearity, Proceedings of the Romanian Academy A, 13 (1), pp. 32-41.
• Biswas, A., Zony, C. and Zerrad, E., (2008), Soliton perturbation theory for the quadratic nonlinear
• Klein-Gordon equation, Applied Mathematics and Computation, 203 (1), pp. 153-156. Biswas, A., Ebadi, G., Fessak, M., Johnpillai, A.G., Johnson, S., Krishnan, E.V. and Yildirim, A., (2012), Solutions of the perturbed Klein-Gordon equations, Iranian Journal of Science and Technology A, 36 (4), pp. 431-452.
• Sassaman, R. and Biswas, A., (2009), Soliton perturbation theory for phi-four model and nonlinear
• Klein-Gordon equations, Communications in Nonlinear Science and Numerical Simulation, 14 (8), pp. 3249.
• Sassaman, R. and Biswas, A., (2009), Topological and non-topological solitons of the generalized
• Klein-Gordon equations, Applied Mathematics and Computation, 215 (1), pp. 212-220. Sassaman, R., Heidari, A. and Biswas, A., (2010), Topological and non-topological solitons of nonlinear
• Klein-Gordon equations by He’s semi-inverse variational principle, Journal of the Franklin Institute, (7), pp. 1148-1157.
• Sassaman, R., Heidari, A., Majid, F., Zerrad, E. and Biswas, A., (2010), Topological and non- topological solitons of the generalized Klein-Gordon equations in 1+2 dimensions, Dynamics of Con- tinuous, Discrete & Impulsive Systems A, 17 (2), pp. 275-286.
• Sassaman, R. and Biswas, A., (2010), Topological and non-topological solitons of the Klein-Gordon equations in 1+2 dimensions, Nonlinear Dynamics, 61 (1-2), pp. 23-28.
• Wazwaz, A., (2006), The modified decomposition method for analytic treatment of differential equa- tions, Applied Mathematics and Computation, 173 (1), pp. 165-176.
• Duncan, D.B., (1997), Symplectic finite difference approximations of the nonlinear Klein-Gordon equation, SIAM Journal on Numerical Analysis, 34 (5), pp. 1742-1760.
• Abbasbandy, S., (2007), Numerical solution of non-linear Klein-Gordon equations by variational iter- ation method, International Journal for Numerical Methods in Engineering, 70 (7), pp. 876-881.
• Yusufoglu, E., (2008), The variational iteration method for studying the Klein-Gordon equation
• Applied Mathematics Letters, 21 (7), pp. 669-674. Wang, Q. and Cheng, D., (2005), Numerical solution of damped nonlinear Klein-Gordon equations using variational method and finite element approach, Applied Mathematics and Computation, 162 (1), pp. 381-401.
• Rashidinia, J., Ghasemi, M. and Jalilian, R., (2010), Numerical solution of the nonlinear Klein-Gordon equation, Journal of Computational and Applied Mathematics, 233 (8), pp. 1866-1878.
• Han, H. and Zhang, Z., (2009), An analysis of the finite-difference method for one-dimensional Klein
• Gordon equation on unbounded domain, Applied Numerical Mathematics, 59 (7), pp. 1568-1583.
• Kaya, D. and El-Sayed, S.M., (2004), A numerical solution of the Klein-Gordon equation and conver- gence of the decomposition method, Applied Mathematics and Computation, 156 (2), pp. 341-353.
• Ebaid, A., (2009), Exact solutions for the generalized Klein-Gordon equation via a transformation and Exp-function method and comparison with Adomian’s method, Journal of Computational and Applied Mathematics, 223 (1), pp. 278-290.
• Wang, T.M. and Zhu, J.M., (2009), New explicit solutions of the Klein-Gordon equation using the variational iteration method combined with the Exp-function method, Computers & Mathematics with Applications, 58 (11-12), pp. 2448.
• Odibat, Z. and Momani, S., (2007), A reliable treatment of homotopy perturbation method for Klein
• Gordon equations, Physics Letters A, 365 (5-6), pp. 351-357. Wazwaz, A.M., (2005) Compactons, solitons and periodic solutions for variants of the KdV and the KP equations, Applied Mathematics and Computation, 161 (2), pp. 561-575.
• Liu, S., Fu, Z. and Liu, S., (2005), Periodic solutions for a class of coupled nonlinear partial differential equations, Physics Letters A, 336 (2-3), pp. 175-179.
• Song, M., Liu, Z., Zerrad, E. and Biswas, A., (2013), Singular soliton solution and bifurcation analysis of Klein-Gordon equation with power law nonlinearity, Frontiers of Mathematics in China, 8 (1), pp. 201.
• Song, M., Liu, Z., Eerrad, E. and Biswas, A., (2013), Singular solitons and bifurcation analysis of quadratic nonlinear klein-gordon equation, Applied Mathematics and Information Sciences, 7 (4), pp. 1340.
• Sassaman, R. and Biswas, A., (2011), Soliton solution of the generalized klein-gordon equation by semi-inverse variational principle, Mathematics in Engineering Science and Aerospace, 2 (1), pp. 99
• Sassaman, R. and Biswas, A., (2011), 1-soliton solution of the perturbed klein-gordon equation
• Physics Express, 1 (1), pp. 9-14. Sassaman, R., Edwards, M., Majid, F. and Biswas, A., (2010), 1-soliton solution of the coupled nonlinear klein-gordon equations, Studies in Mathematical Sciences, 1 (1), pp. 30-37.
• Khalique, C.M. and Biswas, A., (2010), Analysis of non-linear Klein-Gordon equations using Lie symmetry, Applied Mathematics Letters, 23 (11), pp. 1397-1400.
• Biswas, A., Khalique, C.M. and Adem, A.R., (2012), Traveling wave solutions of the nonlinear dis- persive Klein-Gordon equations, Journal of King Saud University, 24 (4), pp. 339-342.
• Aksoy, Y. and Pakdemirli, M., (2010), New perturbation-iteration solutions for Bratu-type equations,Computers and Mathematics with Applications, 59 (8), pp. 2802-2808.