1. Department of Mathematics, Hong Kong University of Science and Technology, Kowloon, Hong Kong
2. Shaanxi Key Laboratory of Environment and Control for Flight Vehicle, Xi'an Jiaotong University, Xi'an, People's Republic of China
3. Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Kowloon, Hong Kong
4. Shenzhen Research Institute, Hong Kong University of Science and Technology, Shenzhen, People's Republic of China