Xu, Qifa
Cai, Chao
Jiang, Cuixia
Sun, Fang
Huang, Xue
Funding for this research was provided by:
the National Social Science Foundation of PR China (15BJY008)
the National Natural Science Foundation of P.R. China (71671056, 71490725)
the Humanity and Social Science Foundation of Ministry of Education of P.R. China (14YJA790015)
Article History
Received: 8 July 2016
Revised: 29 April 2017
First Online: 6 July 2017