GABISONIYA , O. D. On the points of strong summabiity of the Fourier series . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 44, n. 8, p. 1020–1031, 1992. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8030. Acesso em: 14 apr. 2025.