%0 Journal Article %A Stephan Baier %A Ulrich Derenthal %T Quadratic congruences on average and rational points on cubic surfaces %J Acta Arithmetica %D 2015 %P 145-171 %V 171 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa171-2-3/ %R 10.4064/aa171-2-3 %G en %F 10_4064_aa171_2_3