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| 2020, Vol. 37(1): 9-16 DOI: | ||
| National High-tech Zones and Total Factor Productivity Growth of Cities in China——Based on the Empirical Analysis of Difference-in-Differences Method | ||
| LI Jian1, FENG Shan2, DAI Yunhao2 | ||
| 1.School of Economics,Bohai Unversity,Jinzhou 121000,China; 2.School of Economics,Huazhong University of Science and Technology,Wuhan 430074,China |
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| Received 2018-11-18 Revised null | ||
| Supporting info | ||
| null | ||
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