SERDYUK, A.; STEPANIUK, T. Uniform approximations by Fourier sums on the sets of convolutions of periodic functions of high smoothness. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 75, n. 4, p. 542–567, 2023. DOI: 10.37863/umzh.v75i4.7411. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/7411. Acesso em: 27 apr. 2025.