@techreport{NBERr2240,
 title = "Foundations of the Goldilocks Economy: Supply Shocks and the Time-Varying NAIRU",
 author = "Robert J. Gordon",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Reprint Series",
 number = "2240",
 year = "1999",
 month = "August",
 URL = "http://www.nber.org/papers/r2240",
 abstract = {},
}