%0 Journal Article %A William A. Stein %T Visibility of Mordell-Weil groups %J Documenta mathematica %D 2007 %P 587-606 %V 12 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/236/ %R 10.4171/dm/236 %F 10_4171_dm_236