6 IZA Discussion Papers
IZA Discussion Paper No. 15610
IZA Discussion Paper No. 14629
IZA Discussion Paper No. 14361
IZA Discussion Paper No. 12961
published in: International Journal of Manpower, 2020, 42 (3), 341-355
IZA Discussion Paper No. 552
substantially revised and rewritten version available as IZA DP No. 1660
IZA Discussion Paper No. 339
published as 'Aggregate Matching Efficiency: A Stochastic Production Frontier Approach, France 1990 - 1995' in: Empirica, 2004, 31 (1), 1-25