3 IZA Discussion Papers
IZA Discussion Paper No. 7313
published in: Michael Green and Samuel Estreicher (eds.), The Challenge for Collective Bargaining: Proceedings of the NYU 65th Annual Conference on Labor, LexisNexis, 2013
IZA Discussion Paper No. 4948
published in: Research in Labor Economics, 2011, 32, 207-225
IZA Discussion Paper No. 3373