1. Robust numerical methods for singularly perturbed differential equations;Roos,2008
2. Fitted Numerical Methods for Singular Perturbation Problems;Miller,2012
3. Convection–diffusion problems;Stynes,2018
4. On the optimization of the methods for solving boundary value problems in the presence of a boundary layer;Bahvalov;Ž. Vyčisl. Mat i Mat. Fiz.,1969
5. Grid approximation of singularly perturbed parabolic equations with internal layers;Shishkin;Soviet J. Numer. Anal. Math. Model.,1988