Segerson, Kathleen; Ray, Subhash C - In: Bulletin of Economic Research 41 (1989) 3, pp. 207-12
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...