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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)
On the Equivalence of Alternative Measures of the Elasticity of Substitution.
Segerson, Kathleen, (1989)