@techreport{NBERw12058,
 title = "The Most Important Works of Art of the Twentieth Century",
 author = "David W. Galenson",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "12058",
 year = "2006",
 month = "February",
 URL = "http://www.nber.org/papers/w12058",
}