NICHOLLS, P. J.; WATERMAN, P. L. The boundary of convex fundamental domains of Fuchsian groups. Annales Fennici Mathematici, [S. l.], v. 15, n. 1, p. 11–25, 1990. DOI: 10.5186/aasfm.1990.1524. Disponível em: https://afm.journal.fi/article/view/134674. Acesso em: 25 nov. 2024.