1. College of Science, University of Shanghai for Science and Technology, Shanghai, People's Republic of China
2. Department of Control Science and Engineering, University of Shanghai for Science and Technology, Shanghai, People's Republic of China
3. School of Mathematics and Physics, Anhui Polytechnic University, Wuhu, People's Republic of China
4. Department of Mathematics, Harbin University of Science and Technology, Harbin, People's Republic of China