Boichuk, O., and V. Feruk. “Boundary-Value Problems for Weakly Singular Hammerstein-Type Integral Equations”. Ukrains’kyi Matematychnyi Zhurnal 76, no. 1 (February 2, 2024): 62–71. Accessed April 7, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/7487.