Zhang, Ke
Guo, Liru
Gao, Ce
Zhao, Zhenbing
Funding for this research was provided by:
National Natural Science Foundation of China (No. 61302163, No. 61302105)
National Natural Science Foundation of China (No. 61501185)
Natural Science Foundation of Hebei Province (No. F2015502062, No. F2016502062)
Fundamental Research Funds for the Central Universities (No. 2016MS99)
Article History
Received: 20 September 2017
Revised: 20 November 2017
Accepted: 22 November 2017
First Online: 9 December 2017