Wang , HuashengChen , YanpingHuang , Yunqing and Mao , Wenting. (2019). A Posteriori Error Estimates of the Galerkin Spectral Methods for Space-Time Fractional Diffusion Equations.
            <i>Advances in Applied Mathematics and Mechanics</i>. <i>12</i> (1).
            87-100.
         doi:10.4208/aamm.OA-2019-0137