Demand effects on productivity
Effective production: measuring of the sales effect using data envelopment analysis
Measuring Efficiency in Imperfectly Competitive Markets: An Example of Rational Inefficiency
Lee, C-Y. and A.L. Johnson, 2015. Journal of Optimization Theory and Applications 164(2): 702-722.
Two-dimensional Efficiency Decomposition to Measure the Demand Effect in Productivity Analysis
Lee, C-Y. and A.L. Johnson, 2012. European Journal of Operational Research 216: 584-593.