BURCKEL, R. B.; SAEKI, S. Entire functions with spiral limits. Annales Fennici Mathematici, [S. l.], v. 9, n. 1, p. 145–151, 1984. DOI: 10.5186/aasfm.1984.0904. Disponível em: https://afm.journal.fi/article/view/134493. Acesso em: 25 nov. 2024.