AULASKARI, R.; RÄTTYÄ, J. Nevanlinna class contains functions whose spherical derivatives grow arbitrarily fast. Annales Fennici Mathematici, [S. l.], v. 34, n. 2, p. 387–390, 2009. Disponível em: https://afm.journal.fi/article/view/135274. Acesso em: 17 may. 2024.