@techreport{NBERr1157,
 title = "Some Recent Developments in Labor Economics and Their Implications for  Macroeconomics",
 author = "Lawrence F. Katz",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Reprint Series",
 number = "1157",
 year = "1989",
 month = "April",
 URL = "http://www.nber.org/papers/r1157",
 abstract = {},
}