SCHAEFER, Marcus. Toward a Theory of Planarity: Hanani-Tutte and Planarity Variants. Journal of Graph Algorithms and Applications, [S. l.], v. 17, n. 4, p. 367–440, 2013. DOI: 10.7155/jgaa.00298. Disponível em: https://jgaa.info/index.php/jgaa/article/view/paper298. Acesso em: 30 jun. 2024.