3 IZA Discussion Papers
IZA Discussion Paper No. 14610
published as 'The productivity shock in business services' in: Small Business Economics, 2022, 59 (3), 1273 - 1299
IZA Discussion Paper No. 13950
IZA Discussion Paper No. 9188
published in: Ph. Askenazy et al. (eds), Productivity Puzzles Across Europe, Oxford: OUP, 2016.