HAMARA, O. On the Structure of the Orthogonal Group. MATHEMATICA SCANDINAVICA, [S. l.], v. 21, p. 219–232, 1967. DOI: 10.7146/math.scand.a-10861. Disponível em: https://www.mscand.dk/article/view/10861. Acesso em: 3 may. 2024.