1. University of Bayreuth, Germany
2. CESifo, Munich, Germany
3. GEP, Nottingham, United Kingdom
4. IfW, Kiel, Germany
5. University of Göttingen, Germany
6. Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Germany
7. KOF, Zurich, Switzerland
8. University of Duisburg-Essen, Germany
9. DICE, Düsseldorf, Germany