中国科学院数学与系统科学研究院期刊网
AMS
The Fourth Power Mean of the General 2-Dimensional Kloostermann Sums Mod p
Wen Peng ZHANG, Xiao Xue LI
Acta Mathematica Sinica . 2017, (6): 861 -867 .  DOI: 10.1007/s10114-016-6347-9