4 IZA Discussion Papers
IZA Discussion Paper No. 9163
published in: China Economic Review, 2016, 37, 191-207
IZA Discussion Paper No. 6342
published in: Journal of Behavioral and Experimental Economics, 2019, 78, 98-103
IZA Discussion Paper No. 6172
published in: Applied Economics, 2013, 45 (27), 3914-3921
IZA Discussion Paper No. 4354
revised version published in: World Development, 2012, 40 (2), 428 - 435