Seiford LM and J Zhu (2005). “A Response to Comments on Modeling Undesirable Factors in Efficiency Evaluation.” EJOR 161(2): 579-581.

Seiford LM and J Zhu (2005). “A Response to Comments on Modeling Undesirable Factors in Efficiency Evaluation.” EJOR 161(2): 579-581.

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