%0 Journal Article %A D. Burgess %T On the average of character sums for a group of characters %J Acta Arithmetica %D 1997 %P 313-332 %V 79 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-79-4-313-332/ %R 10.4064/aa-79-4-313-332 %G en %F 10_4064_aa_79_4_313_332