4 IZA Discussion Papers
IZA Discussion Paper No. 9873
IZA Discussion Paper No. 8705
published in: Strategic Management Journal, 2016, 37 (1), 116–132,
IZA Discussion Paper No. 2927
published in: RAND Journal of Economics, 2011, 42 (1), 23–43
IZA Discussion Paper No. 651
final version published in: Journal of Institutional and Theoretical Economics, 2004, 160 (2), 232-42