Shi, Y. Y.
Li, M.
Liu, Q.
Jia, Z. J.
Xu, X. C.
Cheng, Y.
Zheng, Y. F.
Funding for this research was provided by:
Project of Scientific and Technical Plan of Beijing (Z141100002814008)
National Natural Science Foundation of China (CN) (No. 31370954)
National Basic Research Program (973) of China (2012CB619102)