STEPANETS, O. I. Rate of convergence of Fourier series on the classes of $\overline{\psi}$-integrals. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 49, n. 8, p. 1069–1113, 1997. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5102. Acesso em: 5 dec. 2025.