ANDREIAN CAZACU, C. Ramification of Klein coverings. Annales Fennici Mathematici, [S. l.], v. 10, n. 1, p. 47–56, 1985. DOI: 10.5186/aasfm.1985.1007. Disponível em: https://afm.journal.fi/article/view/134502. Acesso em: 25 nov. 2024.