167 IZA Discussion Papers
IZA Discussion Paper No. 328
IZA Discussion Paper No. 278
published in: International Tax and Public Finance, 2003, 10 (1), 43-62
IZA Discussion Paper No. 249
IZA Discussion Paper No. 209
IZA Discussion Paper No. 65
published in: Journal of Comparative Economics, 27 (1999), 595-617
IZA Discussion Paper No. 55
published in: Jahrbücher für Nationalökonomie und Statistik, 1999, 219 (3/4), 308-325