elasticity of substitution elasticity of substitution elasticity of substitution elasticity of substitution lasticity of substitution elasticity of substitution elasticity of substitution elasticity of substitution lasticity of substitution http://en.wikipedia.org/wiki/Elasticity_of_substitution elasticity of substitution elasticity of substitution elasticity of substitution elasticity of substitution elasticity of substitution consumer price index consumer price index Elasticity of substitution http://en.wikipedia.org/wiki/Elasticity_of_substitution