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"Analysis of Beijing's environmental efficiency and related factors using a ..."
Xianguo Li, Jing Yang, Xue-Jing Liu (2013)
- Xianguo Li, Jing Yang, Xue-Jing Liu:
Analysis of Beijing's environmental efficiency and related factors using a DEA model that considers undesirable outputs. Math. Comput. Model. 58(5-6): 956-960 (2013)

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