| Affiliation: | 1. Department of Mechanics and Mathematics, Moscow State University, Moscow 119992, Russia;2. Department of Applied Mathematics, Providence University, Taichung, 43301, Taiwan;3. National Center of Theoretical Sciences at Taipei, Physics Division, National Taiwan University, Taipei 10617, Taiwan;4. Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan;5. Center for Nonlinear and Complex Systems and Department of Physics, Chung Yuan Christian University, Chungli 32023, Taiwan |
