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Rocha Garcia, Ricardo (2003). “Drug Trafficking and Its Impact on Colombia: An Economic Overview”. Canadian Journal of Latin American and Caribbean Studies28 (55/56): 277–30. doi:10.1080/08263663.2003.10816844. JSTOR41800192.
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Martinez Jr., Ramiro; Matthew T. Lee; Amie L. Nielsen (Spring 2004). “Segmented Assimilation, Local Context and Determinants of Drug Violence in Miami and San Diego: Does Ethnicity and Immigration Matter?”. International Migration Review38 (1): 131–157. doi:10.1111/j.1747-7379.2004.tb00191.x. JSTOR27645360.
Jacobson, Mireille (Nov 2004). “Baby Booms and Drug Busts: Trends in Youth Drug Use in the United States, 1975–2000”. The Quarterly Journal of Economics119 (4): 1481–1512. doi:10.1162/0033553042476125. JSTOR25098723.
Salvador Maldonado, Aranda (April 2013). “Stories of Drug Trafficking in Rural Mexico: Territories, Drugs and Cartels in Michoacan”. European Review of Latin American and Caribbean Studies94 (94): 43–66. JSTOR23408421.
Thoumi, Francisco (Jul 2002). “Illegal Drugs in Colombia: From Illegal Economic Boom to Social Crisis”. The Annals of the American Academy of Political and Social Science582 (2): 102–116. doi:10.1177/0002716202058002008. JSTOR1049737.
Morrison V (April 1989). “Psychoactive substance use and related behaviours of 135 regular illicit drug users in Scotland”. Drug Alcohol Depend23 (2): 95–101. doi:10.1016/0376-8716(89)90013-6. PMID2702930.
“The dual use of opioids and temazepam by drug injectors in Glasgow (Scotland)”. Drug Alcohol Depend32 (3): 277–80. (May 1993). doi:10.1016/0376-8716(93)90092-5. PMID8348877.
Holmes, Jennifer S.; Piñeres, Sheila Amin Gutiérrez De; Curtin, Kevin M. (2007-04-01). “A Subnational Study of Insurgency: FARC Violence in the 1990s”. Studies in Conflict & Terrorism30 (3): 249–265. doi:10.1080/10576100601148456. ISSN1057-610X.