TONGRON , Y.; PAIKHLAEW, K. The Number of Integers Divisible by a^k Except a^(k+l) b. Science & Technology Asia, [S. l.], v. 27, n. 3, p. 132–136, 2022. Disponível em: https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/242455. Acesso em: 6 feb. 2023.