3 IZA Discussion Papers
IZA Discussion Paper No. 13081
published in: World Development, 2020, 134 (104967).
IZA Discussion Paper No. 12532
published in: Journal of the Economics of Ageing, 2019, 14 (100204).
IZA Discussion Paper No. 8895
revised version published in: American Economic Journal - Economic Policy, 2018, 10 (3), 284-308