4 IZA Discussion Papers
IZA Discussion Paper No. 8147
IZA Discussion Paper No. 3415
IZA Discussion Paper No. 2430
published in: R. Vaubel and P. Bernholz (eds.), Political Competition and Economic Regulation, London: Routledge 2007
IZA Discussion Paper No. 793
revised version published as "Investment, Expropriation and Unionization" in: Economics of Governance, 2009, 10 (1), 27-42