@techreport{NBERw12278,
 title = "Willpower and the Optimal Control of Visceral Urges",
 author = "Emre Ozdenoren and Stephen Salant and Dan Silverman",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "12278",
 year = "2006",
 month = "June",
 URL = "http://www.nber.org/papers/w12278",
}