SRICHAN, Teerapat; TANGSUPPHATHAWAT, Pinthira. On the distribution of primitive roots that are $(k,r)$-integers. Armenian Journal of Mathematics, Yerevan, Armenia, v. 11, n. 12, p. 1–12, 2022. DOI: 10.52737/18291163-2019.11.12-1-12. Disponível em: https://armjmath.sci.am/index.php/ajm/article/view/298. Acesso em: 3 apr. 2025.