SHABOZOV, M. Sh. An approach to the investigation of optimal quadrature formulas for singular integrals with fixed singularity. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 47, n. 9, p. 1300–1304, 1995. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5531. Acesso em: 6 dec. 2025.