@article{IM_1978__47_142567,
     author = {E. Bombieri},
     title = {On {Exponential} {Sums} in {Finite} {Fields,} {II.}},
     journal = {Inventiones mathematicae},
     pages = {29--40},
     publisher = {mathdoc},
     volume = {47},
     year = {1978},
     zbl = {0396.14001},
     url = {http://geodesic.mathdoc.fr/item/IM_1978__47_142567/}
}