3 IZA Discussion Papers
IZA Discussion Paper No. 11210
IZA Discussion Paper No. 6224
published in: Informal Employment in Emerging a Transition Economies, Research in Labor Economics, 34,. Emerald Group Publishing Limited, 2012, 135-166
IZA Discussion Paper No. 3815
published in: Review of Economics of the Household, 2010, 8 (4), 479-504