TY - Journal of Guizhou University of Finance and Economics A1 - ZHANG Shuai, LIU Chun-xue, JIANG Rui T1 - The Impact of Heterogeneous R&D and the productivity dilemma-Research based on Government Support and Market-oriented Reforms Moderating Effects Y1 - 2021-11-15 JF - Journal of Guizhou University of Finance and Economics JO - Journal of Guizhou University of Finance and Economics SP - 57 EP - 66 VL - 39 IS - 06 UR - https://gcxb.gufe.edu.cn N1 - ER -