@techreport{NBERw11486,
 title = "Filming Images or Filming Reality: The Life Cycles of Movie Directors from D.W. Griffith to Federico Fellini",
 author = "David W. Galenson and Joshua Kotin",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "11486",
 year = "2005",
 month = "July",
 URL = "http://www.nber.org/papers/w11486",
}