Waring, Richard H.
Gao, Linlin
Funding for this research was provided by:
National Aeronautics and Space Administration (NNX11A0296)
National Natural Science Foundation of China (41171039, 41475067)
Article History
Received: 2 September 2015
Accepted: 20 January 2016
First Online: 16 February 2016
Compliance with ethical standards
:
: The authors declare that they have no conflict of interests.