Post T (2001). “Estimating Non-Convex Production Sets – Imposing Convex Input Sets and Output Sets in Data Envelopment Analysis.” EJOR 131(1): 132-142.

Post T (2001). “Estimating Non-Convex Production Sets – Imposing Convex Input Sets and Output Sets in Data Envelopment Analysis.” EJOR 131(1): 132-142.

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