Hakk, Kristiina, and Arvet Pedas. “Numerical Solutions and Their Superconvergence for Weakly Singular Integral Equations With Discontinuous Coefficients”. Mathematical Modelling and Analysis 3, no. 1 (December 15, 1998): 104-113. Accessed April 30, 2024. https://journals.vilniustech.lt/index.php/MMA/article/view/9994.