3 IZA Discussion Papers
IZA Discussion Paper No. 11091
published in: International Economic Review, 2018, 59 (3), 1469 -1489
IZA Discussion Paper No. 5322
published in: Journal of Macroeconomics, 2014, 39, 97-112.
IZA Discussion Paper No. 5321
published as 'Optimal public sector wages' in: Economic Journal, 2015, 125 (587), 1425-1451.