4 IZA Discussion Papers
IZA Discussion Paper No. 16323
IZA Discussion Paper No. 15781
IZA Discussion Paper No. 12883
published in: European Management Journal, 2020, 38 (4), 634 - 645
IZA Discussion Paper No. 1708
published in: International Journal of Productivity and Performance Management, 2006, 55 (7), 569 - 593