Tung, Ka-Kit
Chen, Xianyao http://orcid.org/0000-0001-9825-5295
Zhou, Jiansong
Li, King-Fai http://orcid.org/0000-0003-0150-2910
Funding for this research was provided by:
National Science Foundation (AGS-1262231, DMS-236 940342)
National Aeronautics and Space Administration (NNX14AR40G)
National Natural Science Foundation of China (41776032)
National Natural Science Foundation of China (41521091, U1606402)
Article History
Received: 28 December 2017
Accepted: 3 May 2018
First Online: 21 May 2018