RT Journal T1 A1 PB Journal of Guizhou University of Finance and Economics FD 2011-05-15 YR 2011 JF Journal of Guizhou University of Finance and Economics JO Journal of Guizhou University of Finance and Economics VO 29 IS 3 SP 64 DO K1 LK {https://gcxb.gufe.edu.cn/EN/article/article_8461.shtml}