JOSHI, S.B. A Unified Presentation of Certain Subclass of Analytic Functions with Negative Coefficients . MATEMATIKA, [S. l.], v. 23, p. 23–28, 2007. DOI: 10.11113/matematika.v23.n.385. Disponível em: https://matematika.utm.my/index.php/matematika/article/view/385. Acesso em: 9 may. 2024.