LEHTINEN, M. On the inner radius of univalency for non-circular domains. Annales Fennici Mathematici, [S. l.], v. 5, n. 1, p. 45–47, 1980. DOI: 10.5186/aasfm.1980.0515. Disponível em: https://afm.journal.fi/article/view/134367. Acesso em: 25 nov. 2024.