1. Interpreting and testing the scaling property in models where inefficiency depends on firm characteristics;Alvarez;J. Productivity Anal.,2006
2. Size, productivity and returns to scale: an analysis of farm-level data in Indian agriculture;Bardhan;J. Polit. Econ.,1973
3. Panel data;Chamberlain,1984
4. An Introduction to Efficiency and Productivity Analysis;Coelli,2005
5. Colombi, R., Martini, G., Vittadini, G., 2011. A stochastic frontier model with short-run and long-run inefficiency random effects. Discussion paper, Department of Economics and Technology Management, University of Bergamo, Italy.