Clavero, Carmelo, Jose Luis Gracia, Grigorii I. Shishkin, and Lidia P. Shishkina. “Schemes Convergent ε-Uniformly for Parabolic Singularly Perturbed Problems With a Degenerating Convective Term and a Discontinuous Source”. Mathematical Modelling and Analysis 20, no. 5 (September 28, 2015): 641–657. Accessed May 28, 2025. https://journals.vilniustech.lt/index.php/MMA/article/view/1024.