@inbook{NBERc2780,
 Crossref = "NBERhick72-1",
 title = "Introduction and Summary to "Econometric Models of Cyclical Behavior, Vols. 1 and 2"",
 author = "Bert G. Hickman",
 BookTitle = "Econometric Models of Cyclical Behavior, Vols. 1 and 2",
 Publisher = "NBER",
 pages = "1-23",
 year = "1972",
 URL = "http://www.nber.org/chapters/c2780",
}
@book{NBERhick72-1,
 title = "Econometric Models of Cyclical Behavior, Vols. 1 and 2",
 author = "Bert G. Hickman",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1972",
 URL = "http://www.nber.org/books/hick72-1",
}