“Solution of 2D Volterra-Fredholm Integral Equations of First Kind by using Discretization Method”, Punjab Univ. J. Math., vol. 52, no. 9, pp. 1–16, May 2025, Accessed: Jun. 29, 2025. [Online]. Available: https://pujm.pu.edu.pk/index.php/pujm/article/view/368