WIRTHS, K.-J. A Note on Re(f(z)/(z) for Univalent Functions. The Journal of the Indian Mathematical Society, [S. l.], v. 54, n. 1-4, p. 121–123, 1989. Disponível em: http://informaticsjournals.com/index.php/jims/article/view/21878. Acesso em: 6 may. 2024.