作者单位: | Xiaoli Chen(Department of Mathematics Jiangxi Normal University Njiangxi,anchang,330022 E R.China);Jie Sun(School of Mathematics and Statistics Zhejiang University of Finance and Economics Zhejiang,Hangzhou,310012 E R.China);Dongxiang Chen(Department of Mathematics Jiangxi Normal University Jiangxi,Nanchang,330022 P.R.China)
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