Yang, Zhaofei
Wang, Xuan
Yang, Jian
Sun, Min
Wang, Yong
Wang, Xiaomin
Funding for this research was provided by:
National Basic Research Program of the China-973 Project (2011CB504100, 2006CB500700)
Natural Science Foundation of Beijing Municipality (7082008)
Project of Construction of Innovative Teams and Teacher Career Development for Universities and Colleges under Beijing Municipality (IDHT20140514)