1. World Health Organization. WHO Framework Convention on Tobacco Control. http://whqlibdoc.who.int/publications/2003/9241591013.pdf (accessed 8 Mar 2013).
2. Scott E . From research to policy: the cigarette excise tax. Harvard University, Kennedy School of Government Case Program #C16-93-1233.0, 1993.
3. The effects of government regulation on teenage smoking;Lewit;J Law Econ,1981
4. The potential for using excise taxes to reduce smoking;Lewit;J Health Econ,1982