@techreport{NBERw13969,
 title = "Too Young to Leave the Nest: The Effects of School Starting Age",
 author = "Sandra E. Black and Paul J. Devereux and Kjell G. Salvanes",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13969",
 year = "2008",
 month = "April",
 URL = "http://www.nber.org/papers/w13969",
}