| Affiliation: | 1. School of Science, Hangzhou Dianzi University, Hangzhou, Zhejiang, 310018, P. R. China;2. Department of Mathematics and Statistics, University of South Florida, Tampa, FL, 33620-5700, USA;3. International Institute for Symmetry Analysis and Mathematical Modelling, Department of Mathematical Sciences, North-West University, Mafikeng Campus, Private Bag X2046, Mmabatho 2735, South Africa;4. School of Information Engineering, Hangzhou Dianzi University, Hangzhou, Zhejiang, 310018, P. R. China;5. School of Mathematics and Physical Science, Xuzhou Institute of Technology, Xuzhou, Jiangsu, 221111, P. R. China |
