6 IZA Discussion Papers
IZA Discussion Paper No. 14358
IZA Discussion Paper No. 9977
published in: Economic Journal, 2016, 126(596), F1-F27
IZA Discussion Paper No. 8000
published in: Annual Reviews of Economics, 2014, 6(1), 689-733
IZA Discussion Paper No. 7833
revised version available from authors
IZA Discussion Paper No. 4680
published in: Hans-Werner Sinn and Edmund Phelps (eds.), Perspectives on the Performance of the Continental Economies, MIT Press, 2011, 253-322
IZA Discussion Paper No. 2550
published in: American Economic Review, 2007, 97 (2), 31-47