Samajdar, S., M. H. Khandakar, A. Purkait, S. Das, and Banashree Sen. “The Technique Homotopy Perturbation Method Operated on Laplace Equation”. Asian Journal of Science and Applied Technology 11, no. 2 (August 8, 2022): 13–16. Accessed April 19, 2024. https://ojs.trp.org.in/index.php/ajsat/article/view/3295.