@article{CM_1980__40_1_3_0,
     author = {Sperber, S.},
     title = {Congruence properties of the hyperkloosterman sum},
     journal = {Compositio Mathematica},
     pages = {3--33},
     publisher = {Sijthoff et Noordhoff International Publishers},
     volume = {40},
     number = {1},
     year = {1980},
     mrnumber = {558257},
     zbl = {0444.12014},
     language = {en},
     url = {http://www.numdam.org/item/CM_1980__40_1_3_0/}
}