104 IZA Discussion Papers
IZA Discussion Paper No. 1224
published in: Journal of Economic History, 2005, 65 (4), 922-948
IZA Discussion Paper No. 1192
published in: Oxford Review of Economic Policy, 2006, 22 (3), 390-410
IZA Discussion Paper No. 863
IZA Discussion Paper No. 670
published in: Journal of the European Economic Association, 2007, 5 (5), 885-926,