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Journal of Public Economics > 2004 > 88 > 12 > 2423-2445
European Journal of Political Economy > 2004 > 20 > 3 > 807-812
Economics Letters > 2003 > 81 > 1 > 67-71
European Journal of Political Economy > 2002 > 18 > 2 > 391-396
European Economic Review > 1999 > 43 > 4-6 > 649-669
European Journal of Political Economy > 1999 > 15 > 1 > 53-71
International Journal of Industrial Organization > 1996 > 14 > 1 > 1-27