Charnes A and S Zlobec (1989). “Stability of Efficiency Evaluations in Data Envelopment Analysis.” ZOR, Methods and Models of Operations Research 33(3): 167-179.

Charnes A and S Zlobec (1989). “Stability of Efficiency Evaluations in Data Envelopment Analysis.” ZOR, Methods and Models of Operations Research 33(3): 167-179.

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