作者机构:[1]Department of Mathematics and Information Science, Zhangzhou Teacher’s College, Zhangzhou 363000 China
相关基金:Foundation item: Supported by the National Natural Science Foundation of China(11101358); Supported by the Project of Fujian Education Department(JA11165); Supported by the Project of Education Department of Fujian Province(JA12209); Supported by the Project of Zhangzhou Teacher's College(S11104)