Zhang , JiansongYu , YueQin , Rong and Liu , Zhaohui. (2023). A Mass-Preserving Characteristic Finite Difference Method for Miscible Displacement Problem.
            <i>Advances in Applied Mathematics and Mechanics</i>. <i>16</i> (1).
            164-180.
         doi:10.4208/aamm.OA-2022-0060