LANGLEY, J. K. Exceptional sets for linear differential polynomials. Annales Fennici Mathematici, [S. l.], v. 11, n. 1, p. 137–153, 1986. DOI: 10.5186/aasfm.1986.1109. Disponível em: https://afm.journal.fi/article/view/134566. Acesso em: 25 nov. 2024.