Wang , JianyunJin , Jicheng and Tian , Zhikun. (2020). Two-Grid Finite Element Method with Crank-Nicolson Fully Discrete Scheme for the Time-Dependent Schrödinger Equation.
            <i>Numerical Mathematics: Theory, Methods and Applications</i>. <i>13</i> (2).
            334-352.
         doi:10.4208/nmtma.OA-2019-0158