%0 Journal Article %A Stein, William A. %T Visibility of Mordell-Weil groups %J Documenta mathematica %D 2007 %P 587-606 %V 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_2007__12__a2/ %G en %F DOCMA_2007__12__a2