EIGLSPERGER, Markus; KAUFMANN, Michael; EPPINGER, Frank. An Approach for Mixed Upward Planarization. Journal of Graph Algorithms and Applications, [S. l.], v. 7, n. 2, p. 203–220, 2003. DOI: 10.7155/jgaa.00067. Disponível em: https://jgaa-v4.cs.brown.edu/index.php/jgaa/article/view/paper67. Acesso em: 22 dec. 2024.