Liu, S.
Li, X.
Guang, N.
Tian, L.
Mao, H.
Ning, W.
Funding for this research was provided by:
the Nation Science Foundation of China (20973106)
the Fundamental Research Funds for the Central Universities of China (GK201301004)
the Program for Changjiang Scholars and Innovative Research Team in University of China (IRT_14R33)