Kongar E, SM Gupta and SM McGovern (2004). “The Use of Data Envelopment Analysis for Product Recovery.? in Proceedings of the International Society for Optical Engineering, ISOE, Bellingham, WA, US. 5262: 219-231.

Kongar E, SM Gupta and SM McGovern (2004). “The Use of Data Envelopment Analysis for Product Recovery.? in Proceedings of the International Society for Optical Engineering, ISOE, Bellingham, WA, US. 5262: 219-231.

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