Li, Yongming
Zhou, Yong
Liu, Chao
Funding for this research was provided by:
National Natural Science Foundation of China (11461057)
National Science Foundation of Jiangxi (20161BAB201003)
State Key Program of National Natural Science Foundation of China (71331006)
the State Key Program in the Major Research Plan of National Natural Science Foundation of China (91546202)
National Center for Mathematics and Interdisciplinary Sciences (NCMIS), Key Laboratory of RCSDS, AMSS, CAS (2008DP173182)
Innovative Research Team of Shanghai University of Finance and Economics (IRTSHUFE13122402)
Article History
Received: 21 June 2017
Accepted: 20 March 2018
First Online: 3 April 2018
Competing interests
: The authors declare that they have no competing interests.