@article{MS2_1979__44_166635,
     author = {S.R. Barker},
     title = {An inequality for measures on a half-space.},
     journal = {Mathematica Scandinavica},
     pages = {92--102},
     publisher = {mathdoc},
     volume = {44},
     year = {1979},
     zbl = {0468.42011},
     url = {http://geodesic.mathdoc.fr/item/MS2_1979__44_166635/}
}