COHN, P. M. The Construction of Valuations on Skew Fields. The Journal of the Indian Mathematical Society, [S. l.], v. 54, n. 1-4, p. 1–45, 1989. Disponível em: https://informaticsjournals.co.in/index.php/jims/article/view/21872. Acesso em: 7 nov. 2024.