Sums of fractional parts and sum of restricted divisors of a number. Gulf Journal of Mathematics, [S. l.], v. 10, n. 1, p. 36–42, 2021. DOI: 10.56947/gjom.v10i1.552. Disponível em: https://gjom.org/index.php/gjom/article/view/552. Acesso em: 26 aug. 2026.