GRAHL, J.; NEVO, S. Differential polynomials and shared values. Annales Fennici Mathematici, [S. l.], v. 36, n. 1, p. 47–70, 2011. DOI: 10.5186/aasfm.2011.3603. Disponível em: https://afm.journal.fi/article/view/135335. Acesso em: 25 nov. 2024.