“Convergence of Modified Homotopy Perturbation Method for Fredholm-Volterra Integro-Differential Equation of Order M”. Malaysian Journal of Fundamental and Applied Sciences 13, no. 4-1 (December 5, 2017): 340–345. Accessed September 21, 2026. https://mjfas.utm.my/index.php/mjfas/article/view/894.