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2. A review on singularly perturbed differential equations with turning points and interior layers;Sharma;Appl Math Comput,2013
3. Second order singularly perturbed delay differential equations with non-local boundary condition;Elango;J Comput Appl Math,2023
4. Numerical analysis of a singularly perturbed convection diffusion problem with shift in space;Brdar;Appl Numer Math,2023