Wang, Lihua
Zhao, Jianguo
Zhang, Zizhen
Ding, Bingjun
Guo, Yong
Funding for this research was provided by:
Program for New Century Excellent Talents in University (CN) (NCET-11-1033)
Natural Science Foundation of Shanxi Province (2013011007-3)
Key Programs for Science and Technology Development of Datong (201422-5)