2.244 IZA Discussion Papers
IZA Discussion Paper No. 8
published in: Staatswissenschaften und Staatspraxis, 1998, 9 (2), 191-208
IZA Discussion Paper No. 7
published in: Boesler, Klaus-Achim/ Heinritz, Günter/ Wiessner, Reinhard (Hrsg.), Europa zwischen Integration und Regionalismus, Franz Steiner Verlag, Stuttgart, 1998, 56-66
IZA Discussion Paper No. 5
published in: Labour Economics, 1999, 6 (2), 229-251
IZA Discussion Paper No. 4
published in: Ohashi, Isao/ Tachibanaki, Toshiaki (eds.), International Labour Markets, Incentives and Employment, Macmillan Press LTD, Houndsmills, 1998, 300-332