“A Family of Characteristic Discontinuous Galerkin Methods for Transient Advection-Diffusion Equations and Their Optimal-Order L2 Error Estimates”. Communications in Computational Physics 6, no. 1 (June 1, 2009): 203–230. Accessed December 5, 2025. https://www.global-sci.com/index.php/cicp/article/view/5647.