Wang, Xiaolian
Xu, Xin
Liang, Yingmei
Wang, Yonglin
Tian, Chengming
Funding for this research was provided by:
National Natural Science Foundation of China (31470647)
Research Fund for the Doctoral Program of Higher Education of China (20130014110004)
Project of Universities in Beijing Supported by Beijing Government (2050205)
Article History
Received: 8 January 2018
Revised: 18 March 2018
Accepted: 4 April 2018
First Online: 26 April 2018