MOTORNAYA, O. V.; MOTORNYI, V. P. On asymptotically exact estimates for the approximation of certain classes of functions by algebraic polynomials. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 52, n. 1, p. 85–99, 2000. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4399. Acesso em: 5 dec. 2025.