HEINONEN, Juha; YANG, Shanshuang. Strongly uniform domains and periodic quasiconformal maps. Annales Fennici Mathematici, [S. l.], v. 20, n. 1, p. 123–148, 1995. Disponível em: https://afm.journal.fi/article/view/134824. Acesso em: 11 apr. 2026.