Geodesic
Estimates of character sums
Izvestiya. Mathematics, Tome 4 (1970) no. 1, pp. 19-29 
A. A. Karatsuba. Estimates of character sums. Izvestiya. Mathematics, Tome 4 (1970) no. 1, pp. 19-29. http://geodesic.mathdoc.fr/item/IM2_1970_4_1_a1/
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Voir la notice de l'article provenant de la source Math-Net.Ru

A new estimate is obtained for character sums in a finite field of degree $n\geqslant2$.

[1] Karatsuba A. A., “Summy kharakterov i pervoobraznye korni v konechnykh polyakh”, Dokl. AN SSSR, 180:6 (1968), 1287–1289 | Zbl

[2] Davenport H., Erdös P., “The distribution of quadratic and higher residues”, Publ. Math. Debrecen, 2 (1952), 152–265 | MR

[3] Burgess D. A., “On character sums and primitive roots”, Proc. London Math. Soc.(3), 12 (1962), 179–192 | DOI | MR | Zbl