%0 Journal Article %A Gekeler, Ernst-Ulrich %T The distribution of group structures on elliptic curves over finite prime fields %J Documenta mathematica %D 2006 %P 119-142 %V 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_2006__11__a13/ %G en %F DOCMA_2006__11__a13