1. Department of Economics University of Bayreuth Bayreuth Germany
2. GEP University of Nottingham, University Park Nottingham United Kingdom
3. IfW Kiel Germany
4. Department of Management Technology, and Economics ETH Zürich Zürich Switzerland
5. CEPR London United Kingdom
6. Murphy Institute Tulane University New Orleans Louisiana 70118 USA
7. CESifo Munich Germany