Pethig, Rüdiger; Wittlich, Christian - 2009
but the direct effects are stronger than the side effects, the more so, the greater is the elasticity of substitution in … are stronger than the side effects, the more so,
the greater is the elasticity of substitution in consumption between … (Appendix) reveals the elasticity of substitution
in consumption, ( ) ( )( ) ( )/ / /: / / /
z x x z
d x z x z
d U U U Us …