ALONSO GOMEZ, A.; FERNANDEZ ARIAS, A. The space of extensions of a Klein surface of finite genus. Annales Fennici Mathematici, [S. l.], v. 15, n. 2, p. 247–259, 1990. DOI: 10.5186/aasfm.1990.1501. Disponível em: https://afm.journal.fi/article/view/134689. Acesso em: 25 nov. 2024.