CHIANG, Y. Some remarks on Lehto’s domain constant. Annales Fennici Mathematici, [S. l.], v. 17, n. 2, p. 285–293, 1992. DOI: 10.5186/aasfm.1992.1719. Disponível em: https://afm.journal.fi/article/view/134757. Acesso em: 14 apr. 2025.