5 IZA Discussion Papers
IZA Discussion Paper No. 16115
IZA Discussion Paper No. 14986
forthcoming as ' Group-based incentives and individual performance: Unpacking the effort response' in: ILR Review, 2023
IZA Discussion Paper No. 8951
IZA Discussion Paper No. 3405
IZA Discussion Paper No. 237
published in: Journal of African Economies, 2009, 18 (1), 1-51