BÉDOS, Erik. A decomposition theorem for regular extensions of von Neumann algebras. Mathematica Scandinavica, Berkeley, CA, United States, v. 68, p. 108–114, 1991. DOI: 10.7146/math.scand.a-12349. Disponível em: https://journals.msp.org/mscand/article/view/1282. Acesso em: 24 jul. 2026.