Çanak І.; TOTUR, Ü. A Tauberian theorem for the power-series summability method. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 69, n. 12, p. 1701–1713, 2017. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1813. Acesso em: 5 dec. 2025.