Ouyang, Lunqun
Zheng, Kexin
Zhou, Qiong
Xiang, Yueming
Funding for this research was provided by:
National Natural Science Foundation of China (11471108)
Natural Science Foundation of Hunan Province (2016JJ2050)
Scientific Research Foundation of Hunan Provincial Education Department (12B101)
Teaching Reform Foundation of Hunan Province (G21316)
Article History
Received: 16 September 2016
Accepted: 30 December 2017
First Online: 28 July 2018