Mingrong Cui. (2019). Finite Difference Schemes for the Variable Coefficients Single and Multi-Term Time-Fractional Diffusion Equations with Non-Smooth Solutions on Graded and Uniform Meshes.
            <i>Numerical Mathematics: Theory, Methods and Applications</i>. <i>12</i> (3).
            845-866.
         doi:10.4208/nmtma.OA-2018-0046