HALPERN, H. Harmonic analysis of Abelian inner automorphism groups of von Neumann algebras. MATHEMATICA SCANDINAVICA, [S. l.], v. 50, p. 79–99, 1982. DOI: 10.7146/math.scand.a-11946. Disponível em: https://www.mscand.dk/article/view/11946. Acesso em: 3 may. 2024.