HOLOPAINEN, I.; PANKKA, P. Mappings of finite distortion: Global homeomorphism theorem. Annales Fennici Mathematici, [S. l.], v. 29, n. 1, p. 59–80, 2004. Disponível em: https://afm.journal.fi/article/view/135090. Acesso em: 16 may. 2024.