V. V. Savchuk and O. I. Stepanets, “Approximation of Cauchy-Type Integrals”, Ukr. Mat. Zhurn., vol. 54, no. 5, pp. 706–740, May 2002, Accessed: Dec. 06, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/4110