1. Department of EconomicsCentral European UniversityBudapest Hungary
2. Center for Auctions, Procurements and Competition Policy, Department of EconomicsThe Pennsylvania State University, University ParkPennsylvania U.S.A
3. Vancouver School of EconomicsThe University of British ColumbiaVancouver British Columbia Canada
4. Centre for Economic Performance, Department of EconomicsThe London School of Economics, CEPR and NBERLondon England