HOFFMANN-JORGENSEN, J. Measures which agree on balls. MATHEMATICA SCANDINAVICA, [S. l.], v. 37, p. 319–326, 1975. DOI: 10.7146/math.scand.a-11610. Disponível em: https://tidsskrift.dk/math/article/view/11610. Acesso em: 14 aug. 2026.