FEHLMANN, R. Quasiconformal mappings with free boundary components. Annales Fennici Mathematici, [S. l.], v. 7, n. 2, p. 337–347, 1982. DOI: 10.5186/aasfm.1982.0716. Disponível em: https://afm.journal.fi/article/view/134451. Acesso em: 25 nov. 2024.