@article{10_4064_aa_85_1_51_78,
     author = {Karl Norton},
     title = {A character-sum estimate and applications},
     journal = {Acta Arithmetica},
     pages = {51--78},
     publisher = {mathdoc},
     volume = {85},
     number = {1},
     year = {1998},
     doi = {10.4064/aa-85-1-51-78},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-85-1-51-78/}
}