@article{10_1007_s10587_011_0024_z,
     author = {Guo, Xiaoyan and Zhang, Wenpeng},
     title = {A hybrid mean value related to certain {Hardy} sums and {Kloosterman} sums},
     journal = {Czechoslovak Mathematical Journal},
     pages = {759--769},
     publisher = {mathdoc},
     volume = {61},
     number = {3},
     year = {2011},
     doi = {10.1007/s10587-011-0024-z},
     mrnumber = {2853089},
     zbl = {1249.11088},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-011-0024-z/}
}