Jackel Vui Lung Chew, Jumat Sulaiman, Andang Sunarto, and Andrew Tek Wei Saw. “Half-Sweep Approximation for Nonlinear Diffusion Equation In Two-Dimensional Porous Medium”. Applied Mathematics and Computational Intelligence (AMCI), vol. 12, no. 2, Sept. 2023, pp. 1-14, https://ejournal.unimap.edu.my/index.php/amci/article/view/230.