Marasi, H., and A. Pourmostafa Aqdam. “Homotopy Analysis Method and Homotopy Padé Approximants for Solving the Fornberg-Whitham Equation”. Eurasian Mathematical Journal, vol. 6, no. 1, Mar. 2015, pp. 65–75, https://emj.enu.kz/index.php/main/article/view/598.