@article{JRAM_1972__255_151233,
     author = {D.A. Burgess},
     title = {A note on character sums over finite fields.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {80--82},
     publisher = {mathdoc},
     volume = {255},
     year = {1972},
     zbl = {0239.10021},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1972__255_151233/}
}