4 IZA Discussion Papers
IZA Discussion Paper No. 8447
revised version published in: Industrial and Labor Relations Review, 2016, 69 (3), 714 - 736.
IZA Discussion Paper No. 6983
published in: Industrial Relations, 2018, 57 (4), 671-709.
IZA Discussion Paper No. 4783
published in: Labour Economics, 2011, 18 (5), 564-578
IZA Discussion Paper No. 1373
published in: Industrial and Labor Relations Review, 2007, 60 (2), 163-186