“A Family of Characteristic Discontinuous Galerkin Methods for Transient Advection-Diffusion Equations and Their Optimal-Order L2 Error Estimates” (2009) Communications in Computational Physics, 6(1), pp. 203–230. Available at: https://www.global-sci.com/index.php/cicp/article/view/5647 (Accessed: 5 December 2025).