[1] Department of Mathematics and Computational Science, Hunan University of Science and Engineering, Yongzhou 425100, China
[2] Department of Mathematics, East China University of Science and Technology, Shanghai 200237, China
[3] Department of Mathematics and Computational Science, Hunan University of Science and Engineering, Yongzhou 425100, China
[4] Department of Mathematics and Computational Science, Hunan University of Science and Engineering, Yongzhou 425100, China