@inbook{NBERc11101,
 Crossref = "NBERfisc87-1",
 title = "Crazy Explanations for the Productivity Slowdown",
 author = "Paul M. Romer",
 BookTitle = "NBER Macroeconomics Annual 1987, Volume 2",
 Publisher = "The MIT Press",
 pages = "163-210",
 year = "1987",
 URL = "http://www.nber.org/chapters/c11101",
}
@book{NBERfisc87-1,
 title = "NBER Macroeconomics Annual 1987, Volume 2",
 author = "Stanley Fischer",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "The MIT Press",
 year = "1987",
 URL = "http://www.nber.org/books/fisc87-1",
}