GROSS, Jonathan. Genus Distributions of Cubic Outerplanar Graphs. Journal of Graph Algorithms and Applications, [S. l.], v. 15, n. 2, p. 295–316, 2011. DOI: 10.7155/jgaa.00227. Disponível em: https://jgaa.info/index.php/jgaa/article/view/paper227. Acesso em: 30 jun. 2024.