Zhao, Jijun
Wang, Wenyan
Li, Wei
Ren, Danping
Hu, Jinhua
Zhao, Wenyu
Funding for this research was provided by:
Natural Science Foundation of Hebei Province (F2014402075)
Science Research Project Program of Hebei Education Department (QN20131064)
Science and Technology Research and Development Program of Hebei Province Funded Project (1421103054-6)