EPISKOPOSIAN, S. A.; SAGHATELYAN, T. M. Convergence and Integrability of Series with Monotone Decreasing Coefficients by Chrestenson - Levy Systems. The Journal of the Indian Mathematical Society, [S. l.], v. 84, n. 3-4, p. 182–190, 2017. DOI: 10.18311/jims/2017/14850. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/14850. Acesso em: 5 may. 2024.