AHLFORS, L. V. Old and new in Möbius groups. Annales Fennici Mathematici, [S. l.], v. 9, n. 1, p. 93–105, 1984. DOI: 10.5186/aasfm.1984.0901. Disponível em: https://afm.journal.fi/article/view/134487. Acesso em: 25 nov. 2024.