@article{BSMF_2011__139_3_287_0,
     author = {Matom\"aki, Kaisa},
     title = {A note on signs of {Kloosterman} sums},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {287--295},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {139},
     number = {3},
     year = {2011},
     doi = {10.24033/bsmf.2609},
     zbl = {1252.11060},
     language = {en},
     url = {http://www.numdam.org/articles/10.24033/bsmf.2609/}
}