Certain properties of the unit graph over the ring Z_p^k. Gulf Journal of Mathematics, [S. l.], v. 21, n. 2, p. 250–258, 2025. DOI: 10.56947/gjom.v21i2.3572. Disponível em: https://www.gjom.org/index.php/gjom/article/view/3572. Acesso em: 20 aug. 2026.