GUPTA, R. S. Radius of Convexity of a Class of Univalent Functions. The Journal of the Indian Mathematical Society, [S. l.], v. 36, n. 3-4, p. 291–296, 1972. Disponível em: http://informaticsjournals.com/index.php/jims/article/view/16671. Acesso em: 4 may. 2024.