3 IZA Discussion Papers
IZA Discussion Paper No. 8195
published in: Oxford Bulletin of Economics and Statistics, 2017, 79, 797–821.
IZA Discussion Paper No. 3999
published in: E. Nowotny, P. Mooslechner and D. Ritzberger-Grünwald (eds.), The Integration of European Labour Markets, Cheltenham: Edward Elgar Publishing, 2009, 9-23
IZA Discussion Paper No. 3913
published by the European Commission as Economic Paper 363, 2009; and in: Filip Keereman and Istvan Szekely (eds.), Five years of an enlarged EU - a positive-sum game, Springer, Berlin et al., 2010, 63-94