BERGWEILER, W.; EREMENKO, A. Dynamics of a higher dimensional analog of the trigonometric functions. Annales Fennici Mathematici, [S. l.], v. 36, n. 1, p. 165–175, 2011. DOI: 10.5186/aasfm.2011.3610. Disponível em: https://afm.journal.fi/article/view/135342. Acesso em: 25 nov. 2024.