WU Heng-yu
Collaborative-Innovation Center of Financial Security,Chengdu 611130,China;The Center of Chinese Financial Studies,Southwestern University of Finance and Economics,Chengdu 611130,China;School of Economic Information Engineering,Southwestern University of Finance and Economics,Chengdu 611130,ChinaZHU Fu-min
School of Economic Information Engineering,Southwestern University of Finance and Economics,Chengdu 611130,ChinaWEN Jin-ming
The Department of Mathematics and Statistics,McGill University,Montreal,H3A 2K6,Canada