1. HM Customs and Excise, Annual Report 2003–2004 (The Commissioners of HM Customs and Excise, London, 2004)
2. Cigarette Smuggling. Report GAO-04-641, GAO (United States General Accounting Office, 2004). ⟨http://www.gao.gov/new.items/d04641.pdf⟩
3. World Health Organization, WHO Report on the Global Tobacco Epidemic, 2008: The MPOWER Package (World Health Organization, Geneva, 2008)
4. Cadmium, lead, and thallium in smoke particulate from counterfeit cigarettes compared to authentic US brands