YANO, Syouji. On the Index of Clifford Algebras of Quadratic Forms. CUBO, A Mathematical Journal, [S. l.], v. 10, n. 1, p. 19–32, 2008. Disponível em: https://cubo.ufro.cl/index.php/cubo/article/view/1523. Acesso em: 13 oct. 2025.