M. S. Shabozov, “An approach to the investigation of optimal quadrature formulas for singular integrals with fixed singularity”, Ukr. Mat. Zhurn., vol. 47, no. 9, pp. 1300–1304, Sep. 1995, Accessed: Dec. 06, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5531