KEEN, L. On hyperelliptic Schottky groups. Annales Fennici Mathematici, [S. l.], v. 5, n. 1, p. 165–174, 1980. DOI: 10.5186/aasfm.1980.0512. Disponível em: https://afm.journal.fi/article/view/134378. Acesso em: 25 nov. 2024.