Sun, Kai; Henderson, Daniel J. and Kumbhakar, Subal C. (2010): Biases in approximating log production. Forthcoming in: Journal of Applied Econometrics
Badunenko, Oleg; Henderson, Daniel J. and Kumbhakar, Subal C. (2011): When, where and how to perform efficiency estimation. Forthcoming in: Journal of the Royal Statistical Society, Series A