Li, Wenchao
Sha, Xiaopeng
Li, Zhiquan
Meng, Xiaoyun
Gu, Erdan
Funding for this research was provided by:
the Natural Science Foundation of Hebei Province (No.F2014501150)
the Fundamental Research Funds for the Central Universities (N152303012)
Science Research Foundation of Northeastern University at Qinhuangdao (XNK201405)