5 IZA Discussion Papers
IZA Discussion Paper No. 9968
published in: Journal of Public Economics, 2018, 167, 138-157
IZA Discussion Paper No. 9681
IZA Discussion Paper No. 7076
Published in: Journal of Comparative Economics 45(2): 383-409
IZA Discussion Paper No. 2914
Health Economics, 2007, 16 (9), 911-928
IZA Discussion Paper No. 2428
published in: FinanzArchiv, 2007, 63 (2), 264-277