MUSIENKO, A. P.; SERDYUK, A. S. Lebesgue-type inequalities for the de la Valee-Poussin sums on sets of analytic functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 4, p. 522–537, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2436. Acesso em: 5 dec. 2025.