GAULD, D. B.; VAMANAMURTHY, M. K. A special case of Schönflies theorem for quasiconformal mappings in n-space. Annales Fennici Mathematici, [S. l.], v. 3, n. 2, p. 311–316, 1976. DOI: 10.5186/aasfm.1977.0307. Disponível em: https://afm.journal.fi/article/view/134326. Acesso em: 25 nov. 2024.