Duan , ChenghuaLiu , ChunWang , Cheng and Yue , Xingye. (2019). Convergence Analysis of a Numerical Scheme for the Porous Medium Equation by an Energetic Variational Approach.
            <i>Numerical Mathematics: Theory, Methods and Applications</i>. <i>13</i> (1).
            63-80.
         doi:10.4208/nmtma.OA-2019-0073