@article{10_1007_s10587_011_0056_4,
     author = {Yao, Weili},
     title = {A note on the mean value of the general {Kloosterman} sums},
     journal = {Czechoslovak Mathematical Journal},
     pages = {889--900},
     publisher = {mathdoc},
     volume = {61},
     number = {4},
     year = {2011},
     doi = {10.1007/s10587-011-0056-4},
     mrnumber = {2886244},
     zbl = {1249.11089},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.1007/s10587-011-0056-4/}
}