ROYDEN, H. L. A criterion for the normality of a family of meromorphic functions. Annales Fennici Mathematici, [S. l.], v. 10, n. 1, p. 499–500, 1985. DOI: 10.5186/aasfm.1985.1055. Disponível em: https://afm.journal.fi/article/view/134550. Acesso em: 25 nov. 2024.