1. Drug use, drug abuse, and labour market outcomes;Buchmueller;Health Econ.,1998
2. EDADES, 2001, 2003, 2005, 2007, 2009, 2011. Encuestas Domiciliarias sobre Alcohol y Drogas en España (Household Surveys on Alcohol and Drugs in Spain), Observatorio Nacional sobre Drogas. Spanish Ministry of Health and Consumption, National Plan on Drugs.
3. 2011 Annual Report on the State of the Drugs Problem in Europe;EMCDDA (European Monitoring Centre for Drugs and Drug Addiction),2013
4. Ten years of emergency attendances for cocaine-users in Spain;Galicia;Med Clin.,2014
5. The determinants of illegal drug use;Gill;Contemp. Econ. Policy.,1991