%0 Journal Article %A Jens Marklof %T Mean square value of exponential sums related to the representation of integers as sums of squares %J Acta Arithmetica %D 2005 %P 353-370 %V 117 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa117-4-3/ %R 10.4064/aa117-4-3 %G en %F 10_4064_aa117_4_3