Chen, Aibing
Yu, Yifeng
Li, Yuetong
Wang, Yuying
Li, Yunqian
Li, Shuhui
Xia, Kechan
Funding for this research was provided by:
Natural Science Foundation of China (20906019)
Science and Technology Research Projects in Hebei Universities (QN20131069)
Science and Technology Research Projects in Hebei Universities (ZD20131032)