Zhang, Y.
Cai, P.
Chen, M.
Yi, X.
Li, L.
Xiao, D.
Liu, W.
Li, W.
Li, Y.
Funding for this research was provided by:
The Freedom Exploration Program of Central South University ((No. 2011QNZT153))
Natural Science Foundation of Hunan Province ((No. 14JJ6001))