Li CD, YB Li and QH Dai (2005). “Efficiency Evaluation of Thermal Power Plants and its Units with DEA Method.” J North China Electric Power University 32(2): 27-31.

Li CD, YB Li and QH Dai (2005). “Efficiency Evaluation of Thermal Power Plants and its Units with DEA Method.” J North China Electric Power University 32(2): 27-31.

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