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Decomposition of the Fisher Ideal Index of Productivity: A Non-parametric Dual Analysis of US Airlines Data.
Ray, Subhash C, (1996)
Returns to Scale and Input Substitution for Large U.S. Banks.
Noulas, Athanasios G, (1990)
Productivity Growth, Technical Progress, and Efficiency Change in Industrialized Countries: Comment.
Ray, Subhash C, (1997)