2 IZA Discussion Papers
IZA Discussion Paper No. 11160
published in: R. Lensink, S. Sjogren, C. Wihlborg (eds): Paths for Sustainable Economic Development, Gothenburg, 2017, 81 - 96
IZA Discussion Paper No. 9402
published in: Inequality and Growth: Patterns and Policy, edited by Kaushik Basu and Joseph Stiglitz, Palgrave MacMillan, 2016, Ch. 3, pp 101-127