3 IZA Discussion Papers
IZA Discussion Paper No. 9519
published in: China: An International Journal, 2016, 14 (1), 151-170.
IZA Discussion Paper No. 6925
published in: Economics Letters, 2013, 118 (1), 167-169
IZA Discussion Paper No. 5484
published in: Journal of Public Economic Theory, 2013, 15 (1), 77-93