SavchukV. V., and StepanetsO. I. “Approximation of Cauchy-Type Integrals”. Ukrains’kyi Matematychnyi Zhurnal 54, no. 5 (May 25, 2002): 706-740. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4110.