Kerstens K and P Vanden Eeckaut (1999). “Estimating Returns to Scale Using Non-Parametric Deterministic Technologies: A New Method Based on Goodness-of-Fit.” EJOR 113(1): 206-214.

Kerstens K and P Vanden Eeckaut (1999). “Estimating Returns to Scale Using Non-Parametric Deterministic Technologies: A New Method Based on Goodness-of-Fit.” EJOR 113(1): 206-214.

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