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