45 IZA Discussion Papers
IZA Discussion Paper No. 831
published in: Empirical Economics, 2004, 29 (1), 5-20
IZA Discussion Paper No. 810
IZA Discussion Paper No. 541
IZA Discussion Paper No. 107
published as 'Fast track or failure: a study of the graduation and dropout rates of Ph D students in economics' in: Economics of Education Review, 2003, 22 (2), 157-166