Cheng , YaoZhang , Qiang and Wang , Haijin. (2018). Local Analysis of the Local Discontinuous Galerkin Method with the Generalized Alternating Numerical Flux for Two-Dimensional Singularly Perturbed Problem.
            <i>International Journal of Numerical Analysis and Modeling</i>. <i>15</i> (6).
            785-810.
         doi: