%0 Journal Article %A Jetchev, Dimitar P. %A Stein, William A. %T Visibility of the Shafarevich-Tate group at higher level %J Documenta mathematica %D 2007 %P 673-696 %V 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_2007__12__a0/ %G en %F DOCMA_2007__12__a0