Charnes A and RM Thrall (1991). “A Structure for Classifying and Characterizing Efficiency and Inefficiency in Data Envelopment Analysis.” JPA 2: 197-237.
Charnes A and RM Thrall (1991). “A Structure for Classifying and Characterizing Efficiency and Inefficiency in Data Envelopment Analysis.” JPA 2: 197-237.