GEVIRTZ, J. On f’’/f’ and injectivity. Annales Fennici Mathematici, [S. l.], v. 8, n. 1, p. 87–92, 1983. DOI: 10.5186/aasfm.1983.0811. Disponível em: https://afm.journal.fi/article/view/134459. Acesso em: 25 nov. 2024.