3 IZA Discussion Papers
IZA Discussion Paper No. 17059
IZA Discussion Paper No. 4086
revision published in: Journal of Benefit-Cost Analysis, 2014, 5 (1), 3-42
IZA Discussion Paper No. 1904
revised version published as 'Search Equilibrium and Social and Private Returns to Education' in: European Economic Review, 2010, 54 (1), 39-59