4 IZA Discussion Papers
IZA Discussion Paper No. 13720
IZA Discussion Paper No. 12544
published in: Labour Economics, 2022, 78, 102253
IZA Discussion Paper No. 2233
published in: Journal of Health Economics, 2007, 26 (1), 49-60
IZA Discussion Paper No. 396
published in: Journal of the Royal Statistical Society, Series A (Statistics in Society), 2005, 168 (3), 513-538