%0 Journal Article %A D.R. Heath-Brown %T The size of Selmer groups for the congruent number problem. %J Inventiones mathematicae %D 1993 %P 171-196 %V 111 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1993__111_1_144075/ %F IM_1993__111_1_144075