Greene WH (1993). “The Econometric Approach to Efficiency Analysis.” in Fried HO and SS Schmidt (eds.) the Measurement of Productive Efficiency: Techniques and Applications, Oxford U.K.: 68-119.

Greene WH (1993). “The Econometric Approach to Efficiency Analysis.” in Fried HO and SS Schmidt (eds.) the Measurement of Productive Efficiency: Techniques and Applications, Oxford U.K.: 68-119.

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