5 IZA Discussion Papers
IZA Discussion Paper No. 17277
IZA Discussion Paper No. 15216
IZA Discussion Paper No. 8294
IZA Discussion Paper No. 6024
revised version published as 'Financing Growth Through Foreign Aid and Private Foreign Loans: Nonlinearities and Complementarities' in: Journal of International Money and Finance, 2015, 56, 75-96
IZA Discussion Paper No. 4604
published in: Journal of Institutional and Theoretical Economics, 2011, 167 (2), 247-265.