Thanassoulis E (1997). “Duality in Data Envelopment Analysis under Constant Returns to Scale.” IMA J Mathematics Applied in Business and Industry 8(3): 253-266.

Thanassoulis E (1997). “Duality in Data Envelopment Analysis under Constant Returns to Scale.” IMA J Mathematics Applied in Business and Industry 8(3): 253-266.

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