4 IZA Discussion Papers
IZA Discussion Paper No. 12109
published in: Economia, LACEA, 2019, 19 (2), 169 - 196
IZA Discussion Paper No. 10928
published in: Journal of Urban Economics, 2021, 124, 103355
IZA Discussion Paper No. 2892
revised version published in: Labour Economics, 2009, 16 (3), 291-303
IZA Discussion Paper No. 2497
revised version published in: World Development, 2010, 38(6), 908-918