MOTORNYI, V. P. Approximation of fractional-order integrals by algebraic polynomials. II. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 51, n. 7, p. 940–951, 1999. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4683. Acesso em: 5 dec. 2025.