HOFFMANN-JORGENSEN, J. Vector Measures. MATHEMATICA SCANDINAVICA, [S. l.], v. 28, p. 5–32, 1971. DOI: 10.7146/math.scand.a-11003. Disponível em: https://tidsskrift.dk/math/article/view/11003. Acesso em: 13 aug. 2026.