DINGER, Ulla. Measure determining classes of balls in Banach spaces. Mathematica Scandinavica, Berkeley, CA, United States, v. 58, p. 23–34, 1986. DOI: 10.7146/math.scand.a-12126. Disponível em: https://journals.msp.org/mscand/article/view/1505. Acesso em: 25 jul. 2026.