2 IZA Discussion Papers
IZA Discussion Paper No. 6895
revised version published in: World Bank Research Observer, 2014, 29(1), 48-82
IZA Discussion Paper No. 4444
revised version published as 'Atypical Jobs: Stepping Stones or Dead Ends? Evidence from the NLSY79' in: The Manchester School, 2015, 83(1), 17–55