POLYAKOV, O. V. On the best quadrature formulas for some classes of continuous functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 50, n. 9, p. 1284–1288, 1998. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4847. Acesso em: 14 apr. 2025.