304 IZA Discussion Papers
IZA Discussion Paper No. 455
published in: Phanindra V. Wunnava (ed.), The Changing Role of Unions: New Forms of Representation, Armonk, N.Y.: M.E. Sharpe, April 2004
IZA Discussion Paper No. 385
published in: Journal of the European Economic Association, 2005, 3 (1), 120-143
IZA Discussion Paper No. 187
published in: Swedish Economic Policy Review, 2000, 7 (2), 11-53
IZA Discussion Paper No. 67
published in: Jahrbücher für Nationalökonomie und Statistik, 2001, 221(2), 179-201