Sun, Kai; Henderson, Daniel J. and Kumbhakar, Subal C. (2010): Biases in approximating log production. Forthcoming in: Journal of Applied Econometrics
Zhang, Rui; Sun, Kai; Delgado, Michael and Kumbhakar, Subal (2011): Productivity in China's high technology industry: Regional heterogeneity and R&D. Unpublished.
