HELLERSTEIN, S.; MILES, J.; ROSSI, J. On the growth of solutions of certain linear differential equations. Annales Fennici Mathematici, [S. l.], v. 17, n. 2, p. 343–365, 1992. DOI: 10.5186/aasfm.1992.1723. Disponível em: https://afm.journal.fi/article/view/134762. Acesso em: 25 nov. 2024.