@article{MAN_1993__296_4_165085,
     author = {Emmanuel Peyre},
     title = {Unramified cohomology and rationality problems.},
     journal = {Mathematische Annalen},
     pages = {247--268},
     publisher = {mathdoc},
     volume = {296},
     number = {4},
     year = {1993},
     zbl = {0790.12001},
     url = {http://geodesic.mathdoc.fr/item/MAN_1993__296_4_165085/}
}