DAS, R. N.; SINGH, P. On the Coefficient Bounds of a Subclass of Analytic Functions in the Unit Disc. The Journal of the Indian Mathematical Society, [S. l.], v. 40, n. 1-4, p. 153–158, 1976. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/16620. Acesso em: 28 apr. 2024.