Li, Ai-Hong
Liu, Chang-Zhan
Wang, Xue-Fei
Yang, Yang
Liu, Zhi-Yong
Funding for this research was provided by:
the Natural Science Foundation of Hebei Province (B2017202073)
the Foundation of Educational Commission of Hebei Province (Z2017032)
Article History
Received: 23 March 2017
Accepted: 4 January 2018
First Online: 13 January 2018