25 IZA Discussion Papers
IZA Discussion Paper No. 2035
IZA Discussion Paper No. 1087
published in: Journal of Population Economics, 2006, 19 (2), 327-344
IZA Discussion Paper No. 534
IZA Discussion Paper No. 392
published in: R. Muffels, P. Tsakloglou and D. Mayes (eds.), Social Exclusion in European Welfare States, Edward Elgar, Cheltenham, 2002, pp. 135-169
IZA Discussion Paper No. 332
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