2 IZA Discussion Papers
IZA Discussion Paper No. 6564
revised version published as 'Asymmetric spiders: Supplier heterogeneity and the organization of firms' in: Canadian Journal of Economics, 2016, 49 (2), 663 - 684
IZA Discussion Paper No. 5305
revised version published in: Journal of International Economics, 2014, 93 (1), 123-139