CHIMANI, Markus; GUTWENGER, Carsten; MUTZEL, Petra; WONG, Hoi-Ming. Upward Planarization Layout. Journal of Graph Algorithms and Applications, [S. l.], v. 15, n. 1, p. 127–155, 2011. DOI: 10.7155/jgaa.00220. Disponível em: https://jgaa.info/index.php/jgaa/article/view/paper220. Acesso em: 3 jul. 2024.