YAU, K. H. On products of primes and square-free integers in arithmetic progressions. New Zealand Journal of Mathematics, [S. l.], v. 50, p. 93–99, 2020. DOI: 10.53733/66. Disponível em: https://nzjmath.org/index.php/NZJMATH/article/view/66. Acesso em: 29 mar. 2024.