EL-SAYED AHMED, A.; KAMAL, A.; YASSEN, T. Characterizations for certain analytic functions by series expansions with Hadamard gaps. CUBO, A Mathematical Journal, [S. l.], v. 16, n. 1, p. 81–93, 2014. DOI: 10.4067/S0719-06462014000100008. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1290. Acesso em: 29 mar. 2024.