(α,β,δ)- Neighborhood for Certain Analytic Functions with Negative Coefficients. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 4, n. 1, p. 14–19, 2011. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/834. Acesso em: 23 nov. 2024.