RT Journal T1 A1 LIU Liang-Can PB Journal of Guizhou University of Finance and Economics FD 2010-09-15 YR 2010 JF Journal of Guizhou University of Finance and Economics JO Journal of Guizhou University of Finance and Economics VO 28 IS 5 SP 58 DO K1 LK {https://gcxb.gufe.edu.cn/EN/article/article_8381.shtml}