We provide a guideline for estimating a distribution-free panel data stochastic frontier model in the presence of endogenous variables. In particular, we consider variations of the within estimator of Cornwell et al. (1990) to allow endogenous regressors.
Kutlu, Levent, "A distribution-free stochastic frontier model with endogenous regressors" (2018). Economics and Finance Faculty Publications and Presentations. 28.