Sengupta JK (1996). “Data Envelopment Analysis: A New Tool for Improving Managerial Efficiency.” Int J Syst Sci 27(12): 1205-1210.

Sengupta JK (1996). “Data Envelopment Analysis: A New Tool for Improving Managerial Efficiency.” Int J Syst Sci 27(12): 1205-1210.

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