Chen, Yuanyuan
Wang, Le
Zhang, Min
Funding for this research was provided by:
National Natural Science Foundation of China (CN) (71203132)
National Natural Science Foundation of China (71303149)
National Natural Science Foundation of China (71673172)
Shanghai Soong Ching Ling Foundation ((Lu Jiaxian and Gao Wenyig Special Foundation)
Program for Innovative Research Team of Shanghai University of Finance and Eco- nomics (2014110310)