Jia, Dongdong
Yuan, Landang
Zhang, Gengsheng
Funding for this research was provided by:
National Natural Science Foundation of China (11571091)
Natural Science Foundation of Hebei Education Department (ZD2016096)
Natural Science Foundation of Hebei Normal University (L2015Z02)
Article History
Received: 30 June 2017
Revised: 19 April 2018
First Online: 11 May 2018