Entani T, Y Maeda and H Tanaka (2002). “Dual Models of Interval DEA and its Extension to Interval Data.” EJOR 136(1): 32-45.

Entani T, Y Maeda and H Tanaka (2002). “Dual Models of Interval DEA and its Extension to Interval Data.” EJOR 136(1): 32-45.

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