A Class of Topological Foliations on S2 That Are Topologically Equivalent to Polynomial Vector fields. São Paulo Journal of Mathematical Sciences, [S. l.], v. 2, n. 1, p. 29–35, 2008. DOI: 10.11606/issn.2316-9028.v2i1p29-35. Disponível em: https://revistas.usp.br/spjournal/article/view/19.. Acesso em: 18 maio. 2024.