HAAGERUP, U.; SCHULTZ, H. Brown measures of unbounded operators affiliated with a finite von Neumann algebra. MATHEMATICA SCANDINAVICA, [S. l.], v. 100, n. 2, p. 209–263, 2007. DOI: 10.7146/math.scand.a-15023. Disponível em: https://www.mscand.dk/article/view/15023. Acesso em: 3 may. 2024.