1. The unobserved heterogeneity distribution in duration analysis;Abbring,2001
2. Ahn, N., & García-Pérez, J. I. (1999) Unemployment Duration and Worker's Wage Aspirations in Spain. FEDEA, Working Paper no. 99-20.
3. Duration of unemployment in Spain: Relative effects of unemployment benefit and family characteristics;Ahn;Oxford Bulletin of Economics and Statistics,1995
4. An extra time duration model with application to unemployment duration under benefits in Spain;Arranz,2002
5. La descentralización de las prestaciones asistenciales: efectos sobre la igualdad;Ayala,2004