%0 Journal Article %A Alan Forrest %T Symmetric cocycles and classical exponential sums %J Colloquium Mathematicum %D 2000 %P 125-145 %V 84 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-84/85-1-125-145/ %R 10.4064/cm-84/85-1-125-145 %G en %F 10_4064_cm_84_85_1_125_145