PICHUGOV, S. A. Inequalities for trigonometric polynomials in spaces with integral metric. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 63, n. 12, p. 1657–1671, 2011. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2832. Acesso em: 27 apr. 2025.