@article{10_1007_s10587_014_0082_0,
     author = {Di, Han},
     title = {A hybrid mean value involving two-term exponential sums and polynomial character sums},
     journal = {Czechoslovak Mathematical Journal},
     pages = {53--62},
     publisher = {mathdoc},
     volume = {64},
     number = {1},
     year = {2014},
     doi = {10.1007/s10587-014-0082-0},
     mrnumber = {3247443},
     zbl = {06391475},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-014-0082-0/}
}