TY - Journal of Guizhou University of Finance and Economics A1 - ZHAO Jia-Zhang T1 - Y1 - 2011-01-15 JF - Journal of Guizhou University of Finance and Economics JO - Journal of Guizhou University of Finance and Economics SP - 35 EP - VL - 29 IS - 1 UR - https://gcxb.gufe.edu.cn N1 - ER -