This paper provides a necessary and sufficient condition for the equivalence of three alternative measures of the elasticity of factor substitution: the Allen-Uzawa partial elasticity; the shadow elasticity; and the general two-factor, two-price elasticity. Copyright 1989 by Blackwell Publishing...

Using the non parametric approach of Data Envelopment Analysis (DEA) this paper examines the input and output efficiencies of the Indian pharmaceutical firms for the period 1991 to 2005.

In this paper, the authors offer a nonparametric method of decomposing the Fisher ideal index of productivity into individual factors measuring technical efficiency change, allocative efficiency change, shift in the cost function, scale economies due to output change, and an adjustment factor...

This paper examines farm-level efficiency of U.S. dairy farmers by estimating their technical and allocative inefficiencies. The authors allow technical inefficiency to be a function of some farm-specific characteristics. The model extends the existing stochastic frontier methodology in which...

This paper considers the estimation of frontier production functions in panel data models. It proposes a multi-stage method to obtain estimates of (1) the parameters of a flexible input requirement function and (2) technical inefficiency decomposed into time-invariant (firm-specific),...