Ali, M., Justin B. Munyakazi and Tekle Gemechu Dinka 2025. A fitted parameter convergent finite difference scheme for two-parameter singularly perturbed parabolic differential equations. Tamkang Journal of Mathematics. 56, 1 (Feb. 2025), 73–91. DOI:https://doi.org/10.5556/j.tkjm.56.2025.5244.