Liu , Xiong and Chen , Yanping. (2017). Convergence Analysis for the Chebyshev Collocation Methods to Volterra Integral Equations with a Weakly Singular Kernel.
            <i>Advances in Applied Mathematics and Mechanics</i>. <i>9</i> (6).
            1506-1524.
         doi:10.4208/aamm.OA-2016-0049