@techreport{NBERw12519,
 title = "Evaluating the Effectiveness of Child Safety Seats and Seat Belts in Protecting Children from Injury",
 author = "Steven D. Levitt and Joseph J. Doyle",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "12519",
 year = "2006",
 month = "September",
 URL = "http://www.nber.org/papers/w12519",
}