4 IZA Discussion Papers
IZA Discussion Paper No. 11192
published in: Journal of Economic Inequality, 2017, 15, 325 - 344 (also available as OECD Social, Employment and Migration Working Paper)
IZA Discussion Paper No. 6625
published in: British Journal of Industrial Relations, 2015, 53(1), 49-69
IZA Discussion Paper No. 5035
published in: P.Emmenegger et al. (eds.): The Age of Dualization, Oxford: 2012, 73-99