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2020
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Article
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Tab 8
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Research Article
The Impact of Spatial Structure on Economic Efficiency of Beijing-Tianjin-Hebei Megalopolis in China
Table 8
The results of
Kao
test.
Variable
T-statistic
Prob.
ADF
−3.016
0.000
Residual
0.009
HAC
variance
0.005
Note:
rejection of the original hypothesis at a significant level of 1%.