GRYTCZUK, A. Robin’s Inequality for Sum of Divisors Function and the Riemann Hypothesis. Journal of Informatics and Mathematical Sciences, [S. l.], v. 4, n. 1, p. 15–21, 2012. DOI: 10.26713/jims.v4i1.63. Disponível em: https://www.rgnpublications.com/journals/index.php/jims/article/view/63. Acesso em: 5 may. 2024.