El-Zahar, Essam R., Ghaliah F. Al-Boqami, and Haifa S. Al-Juaydi. 2025. “An Efficient Algorithm for Piecewise Approximate Analytical Solutions of High-Order Reaction-Diffusion Singular Perturbation Problems With Boundary and Interior Layers”. Mathematics and Computer Science: Research Updates Vol. 5, May, 33-78. https://doi.org/10.9734/bpi/mcsru/v5/5126.