4 IZA Discussion Papers
IZA Discussion Paper No. 14890
published in: Journal of Health Economics, 2023, 91, 102774.
IZA Discussion Paper No. 3976
published in: Jahrbücher für Nationalökonomie und Statistik, 2009, 229 (2+3), 254-269
IZA Discussion Paper No. 3879
IZA Discussion Paper No. 3030