Allouch, C., M. Arrai, H. Bouda, and M. Tahrichi. “Legendre Superconvergent Degenerate Kernel and Nyström Methods for Nonlinear Integral Equations”. Ukrains’kyi Matematychnyi Zhurnal 75, no. 5 (May 24, 2023): 579–595. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/7039.