Gonzalez E and A Alvarez (2001). “From Efficiency Measurement to Efficiency Improvement: the Choice of a Relevant Benchmark.” EJOR 133(3): 512-520.

Gonzalez E and A Alvarez (2001). “From Efficiency Measurement to Efficiency Improvement: the Choice of a Relevant Benchmark.” EJOR 133(3): 512-520.

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