TY  - JOUR
AU  - Katz, Nicholas M.
TI  - An estimate for character sums
JO  - Journal of the American Mathematical Society
PY  - 1989
SP  - 197
EP  - 200
VL  - 02
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1989-0965007-8/
DO  - 10.1090/S0894-0347-1989-0965007-8
ID  - 10_1090_S0894_0347_1989_0965007_8
ER  -