UrumbaevA. N. (1994) “Optimization of direct methods for the approximate solution of weakly singular integral equations”, Ukrains’kyi Matematychnyi Zhurnal, 46(9), pp. 1246–1254. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/5641 (Accessed: 27July2024).