1. AIDS surveillance in Europe;European Centre for the Epidemiological Monitoring of Aids;Quarterly Report,1995
2. Interventions among injecting drug user?: do they work;Van Ameijden;AIDS,1995
3. Intravenous administration among heroin users having treatment in Spain;Fuente;International Journal of Epidemiology,1994
4. Declining prevalence of injection as main route of administration among heroin users treated in Spain;Fuente;European Journal of Public Health,1991-1993