@techreport{ w13599,
 title = "The Mortality Cost to Smokers",
 author = "W. Kip Viscusi and Joni Hersch",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13599",
 year = "2007",
 month = "November",
 URL = "http://www.nber.org/papers/w13599",
}