TAMMI, O. Some coefficient estimations in the class Sigma’b of meromorphic univalent functions. Annales Fennici Mathematici, [S. l.], v. 13, n. 1, p. 125–136, 1988. DOI: 10.5186/aasfm.1988.1308. Disponível em: https://afm.journal.fi/article/view/134617. Acesso em: 25 nov. 2024.