4 IZA Discussion Papers
IZA Discussion Paper No. 9410
published in: Industrial and Labor Relation Review, 2018, 71 (1), 174-207
IZA Discussion Paper No. 8891
published in: Philippe Askenazy, Lutz Bellmann, Alex Bryson, and Eva Moreno Galbis (eds.), Productivity Puzzles Across Europe, Oxford University Press, 2016, ISBN: 9780198786160, Chapter 8,
IZA Discussion Paper No. 6259
IZA Discussion Paper No. 3832
published in: SERIEs Journal of the Spanish Economic Association, 2016, 7, 421-459.