Wang Y-M, R Greatbanks and J-B Yang (2005). “Interval Efficiency Assessment Using Data Envelopment Analysis.” Fuzzy Sets and Systems 153(3): 347-370.

Wang Y-M, R Greatbanks and J-B Yang (2005). “Interval Efficiency Assessment Using Data Envelopment Analysis.” Fuzzy Sets and Systems 153(3): 347-370.

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