Zhiyong Xing & Liping Wen. (2019). The Fast Implementation of the ADI-CN  Method for a Class of Two-Dimensional Riesz Space-Fractional Diffusion Equations.
            <i>Advances in Applied Mathematics and Mechanics</i>. <i>11</i> (4).
            942-956.
         doi:10.4208/aamm.OA-2018-0162