@techreport{NBERw12079,
 title = "Why Have Business Cycle Fluctuations Become Less Volatile?",
 author = "Andres Arias and Gary D. Hansen and Lee E. Ohanian",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "12079",
 year = "2006",
 month = "March",
 URL = "http://www.nber.org/papers/w12079",
}