References

Almanza-Vasquez, E., C. de Indias, A.M. Marin-Ramirez and R.D. Ortiz-Ortiz, 2015. Approximation to the dissipative klein-gordon equation. Int. J. Math. Anal., 9: 1059-1063.
Direct Link  |  

Kolpak, E.P. and S.E. Ivanov, 2016. On the three-dimensional Klein-Gordon equation with a cubic nonlinearity. Int. J. Math. Anal., 10: 611-622.
Direct Link  |  

Laura, G.L., O. Osuna and V.G. Aguilar, 2011. Non-existence of limit cycles via inverse integrating factors. Electron. J. Differ. Equ., 2011: 1-6.
Direct Link  |  

Marin, A.M., R.D. Ortiz and J.A. Rodriguez, 2013. Asymptotics of eigenfunctions for discrete Klein-Gordon equation. Int. J. Math. Sci. Eng. Applic., 7: 183-192.

Marin, A.M., R.D. Ortiz and J.A.R. Ceballos, 2013. Asymptotics for klein-gordon equation. Proyecciones J. Math., 32: 259-265.
CrossRef  |  Direct Link  |  

Marin-Ramirez, A.M., C. de Indias, R.D. Ortiz-Ortiz and R. Zabaleta-Mesino, 2014. Antibound state for Klein-Gordon equation. Int. J. Math. Anal., 8: 2945-2949.
Direct Link  |  

Ortiz, R.D.O., A.M.M. Ramirez and J.A.R. Ceballos, 2012. Asymptotics of the Klein-Gordon equation. Far East J. Appl. Math., 70: 139-145.

Osvaldo, O., R. Joel, V. Gabriel, V. Geiser and D.E. Villada, 2015. On the Limit cycles for Lienard Equation. Int. J. Contemp. Math. Sci., 10: 311-316.
Direct Link  |  

Salas, A.H. and J.E. Castillo, 2012. The Seno-Gordon equation perturbed in the nonlinear dynamics of DNA. Rev. Mex. De. Fisica, 58: 481-487.
Direct Link  |