@inbook{NBERc0504,
 Crossref = "NBERfabr59-1",
 title = "Importance of the Facts",
 author = "Solomon Fabricant",
 BookTitle = "Basic Facts on Productivity Change",
 Publisher = "NBER",
 pages = "1-3",
 year = "1959",
 URL = "http://www.nber.org/chapters/c0504",
}
@book{NBERfabr59-1,
 title = "Basic Facts on Productivity Change",
 author = "Solomon Fabricant",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1959",
 URL = "http://www.nber.org/books/fabr59-1",
}