Xu, Guixian
Wang, Changzhi
Yao, Haishen
Qi, Qi
Funding for this research was provided by:
Beijing Social Science Foundation (14WYB040)
First class university, First class discipline construction funds of Minzu University of China (2017MDYL12)
National Natural Science Foundation of China (61309012)
National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2014BAK10B03, 2014BAK10B03)
Article History
Received: 5 April 2017
Revised: 26 June 2017
Accepted: 28 June 2017
First Online: 8 July 2017