Cheru, Shegaye Lema, Gemechis File Duressa, and Tariku Birabasa Mekonnen. 2025. “Adaptive Mesh Extended Cubic B-Spline Method for Singularly Perturbed Delay Sobolev Problems”. Tamkang Journal of Mathematics 56 (2):165-85. https://doi.org/10.5556/j.tkjm.56.2025.5290.