RAMANATHAN, K. G. Quadratic Forms over Involutorial Division Algebras. The Journal of the Indian Mathematical Society, [S. l.], v. 20, n. 1-3, p. 227–257, 1956. DOI: 10.18311/jims/1956/16992. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/16992. Acesso em: 4 may. 2024.