PUTRA, L. R. W.; ALBARACIN, J. R.; WARDHANA, I. G. A. W. On Sombor Energy of the Nilpotent Graph of the Ring of Integers Modulo ε. Journal of the Indonesian Mathematical Society, [S. l.], v. 31, n. 3, p. 1856, 2025. DOI: 10.22342/jims.v31i3.1856. Disponível em: https://jims-a.org/index.php/jimsa/article/view/1856. Acesso em: 17 aug. 2025.