1. CERGE-EI (a joint workplace of Charles University and the Economics Institute of the Czech Academy of Sciences) and Institute of Economic Studies, Faculty of Social Sciences, Charles University , Czech Republic
2. University of Bonn , Germany
3. Institute of Economic Studies, Faculty of Social Sciences, Charles University and Economics Institute of the Czech Academy of Sciences , Czech Republic
4. UC Berkeley, CEPR & NBER , USA
5. Technical University of Košice, Slovak Republic & Durham University , UK