TY - Journal of Guizhou University of Finance and Economics A1 - T1 - Y1 - 2011-03-15 JF - Journal of Guizhou University of Finance and Economics JO - Journal of Guizhou University of Finance and Economics SP - 78 EP - VL - 29 IS - 2 UR - https://gcxb.gufe.edu.cn N1 - ER -