Xiong, Dianguang
Wang, Yonglin
Tian, Chengming
Funding for this research was provided by:
Beijing Higher Education Young Elite Teacher Project (YETP0737)
National Natural Science Foundation of China (31370013)
Fundamental Research Funds for the Central Universities (BLYJ201507)
Article History
Received: 5 December 2014
Accepted: 22 April 2015
First Online: 5 May 2015