Nargund, A. L., R. Madhusudhan, and S. B. Sathyanarayana. “Semi Analytic Approximate Solution Of Nonlinear Partial Differential Equations”. International Journal Of Mathematics And Computer Research, Vol. 4, no. 06, June 2016, pp. 1418-2, http://ijmcr.in/index.php/ijmcr/article/view/50.