Kaixin Wang, Hong Wang, Mohamed Al-Lawatia and Hongxing Rui. (2009). A Family of Characteristic Discontinuous Galerkin Methods for Transient Advection-Diffusion Equations and Their Optimal-Order L<sup>2</sup> Error Estimates.
            <i>Communications in Computational Physics</i>. <i>6</i> (1).
            203-230.
         doi: