PEDERSEN, Gert Kjaergaard. Measure Theory for $C^*$ Algebras II. MATHEMATICA SCANDINAVICA, [S. l.], v. 22, p. 63–74, 1968. DOI: 10.7146/math.scand.a-10871. Disponível em: https://tidsskrift.dk/math/article/view/10871. Acesso em: 14 aug. 2026.