GUPTA, B. L. Cesaro Summability of Fourier Series. The Journal of the Indian Mathematical Society, [S. l.], v. 38, n. 1-4, p. 263–270, 1974. Disponível em: https://informaticsjournals.com/index.php/jims/article/view/16700. Acesso em: 2 may. 2024.