Cherchye L and T van Puyenbroeck (1999). “Learning from Input-Output Mixes in DEA: A Proportional Measure for Slack-Based Efficient Projections.” Managerial and Decision Economics 20(3): 151-161.

Cherchye L and T van Puyenbroeck (1999). “Learning from Input-Output Mixes in DEA: A Proportional Measure for Slack-Based Efficient Projections.” Managerial and Decision Economics 20(3): 151-161.

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