Negero, Naol Tufa, and Gemechis File Duressa. 2022. “An Exponentially Fitted Spline Method for Singularly Perturbed Parabolic Convection-Diffusion Problems With Large Time Delay”. Tamkang Journal of Mathematics 54 (4):313-38. https://doi.org/10.5556/j.tkjm.54.2023.3983.