Abdullah, Aslam. “Relationship Between Mesh Number and Singular Perturbation Parameter for the Solution of Singularly Perturbed Two-Point Boundary Value Problem”. CFD Letters 12, no. 7 (January 16, 2021): 26–36. Accessed November 24, 2024. https://akademiabaru.com/submit/index.php/cfdl/article/view/3264.