Regional cooperation efficiency evaluation of equipment manufacturing industry based on DEA method: Empirical analysis of Beijing-Tianjin-Hebei region and Yangtze river delta region
2017 ◽
Vol 20
(1)
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pp. 281-293
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Keyword(s):
Keyword(s):
Keyword(s):
2019 ◽
Vol 124
(6)
◽
pp. 3607-3623
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2021 ◽