BARKER, S. R. An inequality for measures on a half-space. Mathematica Scandinavica, Berkeley, CA, United States, v. 44, p. 92–102, 1979. DOI: 10.7146/math.scand.a-11797. Disponível em: https://journals.msp.org/mscand/article/view/1846. Acesso em: 25 jul. 2026.