Charnes A and RM Thrall (1986). “Classifying and Characterizing Efficiencies and Inefficiencies in Data Envelopment Analysis.” Operations Research Letters 5(3): 105-110.
Charnes A and RM Thrall (1986). “Classifying and Characterizing Efficiencies and Inefficiencies in Data Envelopment Analysis.” Operations Research Letters 5(3): 105-110.