%0 Journal Article %A I. D. Shkredov %T Examples of sets with large trigonometric sums %J Sbornik. Mathematics %D 2007 %P 1805-1838 %V 198 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2007_198_12_a5/ %G en %F SM_2007_198_12_a5