GAGARIN, A.; KOCAY, W.; NEILSON, D. Embeddings of Small Graphs on the Torus. CUBO, A Mathematical Journal, [S. l.], v. 5, n. 2, p. 351–371, 2003. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1703. Acesso em: 19 may. 2024.