Sun, Kai and Henderson, Daniel J. and Kumbhakar, Subal C. (2010): Biases in approximating log production. Forthcoming in: Journal of Applied Econometrics
Zhang, Rui and Sun, Kai and Delgado, Michael and Kumbhakar, Subal (2011): Productivity in China's high technology industry: Regional heterogeneity and R&D.
Malikov, Emir and Sun, Kai and Kumbhakar, Subal C. (2018): Nonparametric Estimates of the Clean and Dirty Energy Substitutability.
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