CECCHINI, C. A Spatial Characterization of $\omega$ Conditional Expectations on von Neumann Algebras. MATHEMATICA SCANDINAVICA, [S. l.], v. 76, p. 105–114, 1995. DOI: 10.7146/math.scand.a-12528. Disponível em: https://www.mscand.dk/article/view/12528. Acesso em: 1 may. 2024.