Georgiev, Svetlin G., and Khaled Zennir. “New Approach to Prove the Existence of Classical Solutions for a Class of Nonlinear Parabolic Equations”. CUBO, A Mathematical Journal 20, no. 2 (July 31, 2018): 23–39. Accessed May 18, 2024. https://cubo.ufro.cl/ojs/index.php/cubo/article/view/2048.