HAAGERUP, U. The standard form of von Neumann algebras. MATHEMATICA SCANDINAVICA, [S. l.], v. 37, p. 271–283, 1975. DOI: 10.7146/math.scand.a-11606. Disponível em: https://www.mscand.dk/article/view/11606. Acesso em: 3 may. 2024.