A robust, exponentially fitted higher-order numerical method for a two-parameter singularly perturbed boundary value problem. - Adisie Fenta Agmas; Fasika Wondimu Gelu; Meselech Chima Fino (Frontiers Appl. Math. Stat., 2024)

A Layer-Adapted Numerical Method for Singularly Perturbed Partial Functional-Differential Equations. - Ahmed A. Al Ghafli; Fasika Wondimu Gelu; Hassan J. Al Salman (Axioms, 2025)

A Cubic Spline Numerical Method for a Singularly Perturbed Two-Parameter Ordinary Differential Equation. - Hassan J. Al Salman; Fasika Wondimu Gelu; Ahmed A. Al Ghafli (Axioms, 2025)