1. Open marginality: Heroin epidemics in different groups;Agar;Journal of Drug Issues,2001
2. Dying to be men: Youth, masculinity and social exclusion;Barker,2005
3. Risk society: Towards a new modernity;Beck,1992
4. Structural interventions: Concepts, challenges and opportunities for research;Blackenship;Journal of Urban Health,2006
5. In search of respect: Selling crack in El Barrio;Bourgois,2003