SERDYUK, A. S.; SOKOLENKO, I. V. Linear approximation methods and the best approximations of the Poisson integrals of functions from the classes $H_{ω_p}$ in the metrics of the spaces $L_p$. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 62, n. 7, p. 979–996, 2010. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2930. Acesso em: 27 apr. 2025.