Bertoletti, Paolo - In: Journal of Productivity Analysis 24 (2005) 2, pp. 183-196
/Lau Elasticity of Substitution (Lau, Production Economics: A Dual Approach to Theory and Applications. Amsterdam: North-Holand (1978 …)). The former is, in fact, the proper elasticity of substitution in the case of the inverse, unconditional input demand. Our …