S. Sekar, and A. S. Thirumurugan. “Numerical Investigation of the Nonlinear Integro-Differential Equations Using He’s Homotopy Perturbation Method”. Malaya Journal of Matematik 5, no. 02 (April 1, 2017): 389–394. Accessed July 16, 2024. https://www.malayajournal.org/index.php/mjm/article/view/603.