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"A conditional directional distance function approach for measuring ..."
George Emm. Halkos, Nickolaos G. Tzeremes (2013)
- George Emm. Halkos, Nickolaos G. Tzeremes:
A conditional directional distance function approach for measuring regional environmental efficiency: Evidence from UK regions. Eur. J. Oper. Res. 227(1): 182-189 (2013)
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