65 IZA Discussion Papers
IZA Discussion Paper No. 887
published in: Journal of Economic Behavior and Organization, 2005, 56 (3), 383-403
IZA Discussion Paper No. 855
published in: European Economic Review, 2006, 50 (1), 147-170
IZA Discussion Paper No. 712
published in: P. Hammerstein (ed.), Genetic and Cultural Evolution of Cooperation, Cambridge: MIT Press, 2004
IZA Discussion Paper No. 651
final version published in: Journal of Institutional and Theoretical Economics, 2004, 160 (2), 232-42
IZA Discussion Paper No. 507
published in: European Economic Review, 2002, 46 (4-5), 687-724
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