Priyadharshini, Rajarammohanroy Mythili, and Narashimhan Ramanujam. “Uniformly-Convergent Numerical Methods for a System of Coupled Singularly Perturbed convection–diffusion Equations With Mixed Type Boundary Conditions”. Mathematical Modelling and Analysis 18, no. 5 (December 1, 2013): 577-598. Accessed May 3, 2024. https://journals.vilniustech.lt/index.php/MMA/article/view/4139.