Hongli Jia, Yang Yang & Zhongqing Wang. (2019). An $hp$-Version Chebyshev Spectral Collocation Method for Nonlinear Volterra Integro-Differential Equations with Weakly Singular Kernels.
            <i>Numerical Mathematics: Theory, Methods and Applications</i>. <i>12</i> (3).
            969-994.
         doi:10.4208/nmtma.OA-2018-0104