BOAS, R. P.; IZUMI, S. Absolute Convergence of Some Trigonometric Series, I. The Journal of the Indian Mathematical Society, [S. l.], v. 24, n. 1-2, p. 191–210, 1960. DOI: 10.18311/jims/1960/16905. Disponível em: https://informaticsjournals.com/index.php/jims/article/view/16905. Acesso em: 28 apr. 2024.