Simar L and PW Wilson (2007). “Estimation and Inference in Two-Stage, Semi-Parametric Models of Production Processes.” J Econometrics 136(1): 31-64.

Simar L and PW Wilson (2007). “Estimation and Inference in Two-Stage, Semi-Parametric Models of Production Processes.” J Econometrics 136(1): 31-64.

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