Elboree, Mohammed, A. M. Yousef, and S. Z. Rida. 2016. “Solutions for the Fractional Partial Differential Coupled Sine-Gordon Equation With Homotopy Analysis Method and the Modified Decomposition Method”. Journal of Progressive Research in Mathematics 6 (4), 831-41. http://scitecresearch.com/journals/index.php/jprm/article/view/444.