Yvonne Sperlich University of Geneva   University of Geneva Bvd du Pont d'Arve 40 Geneva, 1205 Switzerland   yvonne.sperlich@unige.ch   http://unige.ch/gsem/iee/en/members/post-docs/sperlich-yvonne/           JEL Areas: F : International Economics F4 : Macroeconomic Aspects of International Trade and Finance: General