Ali, Mekashaw, Justin B. Munyakazi, and Tekle Gemechu Dinka. “A Fitted Parameter Convergent Finite Difference Scheme for Two-Parameter Singularly Perturbed Parabolic Differential Equations”. Tamkang Journal of Mathematics 56, no. 1 (February 1, 2025): 73–91. Accessed April 3, 2025. https://journals.math.tku.edu.tw/index.php/TKJM/article/view/5244.