@article{IM_1994__118_1_144239,
     author = {D.R. Heath-Brown},
     title = {The size of {Selmer} groups for the congruent number problem, {II.}},
     journal = {Inventiones mathematicae},
     pages = {331--370},
     publisher = {mathdoc},
     volume = {118},
     number = {1},
     year = {1994},
     zbl = {0815.11032},
     url = {http://geodesic.mathdoc.fr/item/IM_1994__118_1_144239/}
}