3 IZA Discussion Papers
IZA Discussion Paper No. 13232
published in: Social Science & Medicine, 2020, 259, 112829
IZA Discussion Paper No. 6591
published in: Journal of Happiness Studies, 2013, 14 (4), 1379-1408
IZA Discussion Paper No. 5157
published in: Oxford Economic Papers, 2013, vol. 65(1), 47-73