A Study of Some Problems on the Dirichlet Characters (mod q). Contemporary Mathematics , [S. l.], v. 5, n. 1, p. 118–124, 2024. DOI: 10.37256/cm.5120243467. Disponível em: https://ojs353.mebyme.cn/index.php/CM/article/view/3467. Acesso em: 24 dec. 2025.