FERNAU, Henning. Two-Layer Planarization: Improving on Parameterized Algorithmics. Journal of Graph Algorithms and Applications, [S. l.], v. 9, n. 2, p. 205–238, 2005. DOI: 10.7155/jgaa.00106. Disponível em: http://jgaa-v4.cs.brown.edu/index.php/jgaa/article/view/paper106. Acesso em: 6 jul. 2024.