KUMAR, A.; KUMAR, V.; SEHGAL, A. Extreme Vertices of the Psi-Divisible Graph of the Group Z_{p^n}. Journal of the Indonesian Mathematical Society, [S. l.], v. 32, n. 2, p. 2145, 2026. DOI: 10.22342/jims.v32i2.2145. Disponível em: https://jims-a.org/index.php/jimsa/article/view/2145. Acesso em: 15 sep. 2026.