Modification of Homotopy Perturbation Algorithm Through Least Square Optimizer for Higher Order Integro-Differential Equations. Punjab Univ. J. Math. [Internet]. 2023 Feb. 12 [cited 2025 Jun. 29];55(2):45-57. Available from: https://pujm.pu.edu.pk/index.php/pujm/article/view/171