YOU, Xu. Approximation and inequalities for the factorial function related to the Burnside’s formula. CUBO, A Mathematical Journal, [S. l.], v. 26, n. 2, p. 317–326, 2024. DOI: 10.56754/0719-0646.2602.317. Disponível em: https://cubo.ufro.cl/index.php/cubo/article/view/3761. Acesso em: 2 nov. 2025.