Jiang, Dingde
Ying, Xu
Han, Yang
Lv, Zhihan
Funding for this research was provided by:
National Natural Science Foundation of China (61071124)
Program for New Century Excellent Talents in University (NCET-11-0075)
Fundamental Research Funds for the Central Universities (N120804004, N130504003)
State Scholarship Fund (201208210013)