SERDYUK, A. S.; STEPANYUK, T. A. Approximation of the classes of generalized Poisson integrals by Fourier sums in metrics of the spaces $L_s$. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 69, n. 5, p. 695–704, 2017. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1728. Acesso em: 5 dec. 2025.