Ali AI and LM Seiford (1993). “The Mathematical Programming Approach to Efficiency Analysis.” in Fried HO and SS Schmidt (eds.) the Measurement of Productive Efficiency: Techniques and Applications, Oxford U.K.: 120-159.
Ali AI and LM Seiford (1993). “The Mathematical Programming Approach to Efficiency Analysis.” in Fried HO and SS Schmidt (eds.) the Measurement of Productive Efficiency: Techniques and Applications, Oxford U.K.: 120-159.