Affiliation: | 1. Department of Mathematics, East China University of Science and Technology, Shanghai, 200237, PR China;2. Institute of Mathematics of NAS of Ukraine, 3 Tereshchenkivska Str., 01601 Kyiv, Ukraine;1. Department of Mathematics, Beijing Jiao Tong University, Beijing 100044, China;2. Institute of Nonlinear Science, Shaoxing University, Shaoxing 312000, China |