@techreport{NBERr1831,
 title = "The Value and Performance of U.S. Corporations",
 author = "Bronwyn H. Hall and Robert E. Hall",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Reprint Series",
 number = "1831",
 year = "1993",
 month = "December",
 URL = "http://www.nber.org/papers/r1831",
 abstract = {},
}