AKIMENKO, V. V. On quadrature and cubature formulas for a class of multiple singular integrals. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 49, n. 12, p. 1677–1683, 1997. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5172. Acesso em: 5 dec. 2025.