Duan, Yi-Zhong
Shen, Ye-Hua
Kang, Fu-Ren
Wang, Jian-Wu
Funding for this research was provided by:
the Postdoctoral Science Foundation of Northwest University
the National Natural Science Foundation of China (41601059)
Article History
Received: 18 December 2017
Accepted: 30 December 2017
First Online: 23 February 2018