HAVIAR, M.; KURTULÍK, S. A new class of graceful graphs: \(k\)-enriched fan graphs and their characterisations. CUBO, A Mathematical Journal, [S. l.], v. 23, n. 2, p. 313–331, 2021. DOI: 10.4067/S0719-06462021000200313. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/2729. Acesso em: 29 mar. 2024.