Power Digraphs Associated with the Congruence xn = y (mod m). Punjab University Journal of Mathematics, [S. l.], v. 51, n. 5, p. 93–102, 2025. Disponível em: https://pujm.pu.edu.pk/index.php/pujm/article/view/444. Acesso em: 29 jun. 2025.