5 IZA Discussion Papers
IZA Discussion Paper No. 15937
IZA Discussion Paper No. 13235
IZA Discussion Paper No. 9569
IZA Discussion Paper No. 9427
published in: Cityscape - A Journal of Policy Development and Research, 2016, 18 (3), 185-198
IZA Discussion Paper No. 5522
published in: Journal of Forecasting, 2013, 32 (4), 299 - 306.