HAAGERUP, Uffe; SKAU, Christian F. Geometric aspects of the Tomita-Takesaki theory II. Mathematica Scandinavica, Berkeley, CA, United States, v. 48, p. 241–252, 1981. DOI: 10.7146/math.scand.a-11915. Disponível em: https://journals.msp.org/mscand/article/view/1712. Acesso em: 25 jul. 2026.