@inbook{NBERc1239,
 Crossref = "NBERferb67-1",
 title = "An Econometric Analysis of the Role of Financial Intermediaries in Postwar Residential Building Cycles",
 author = "Gordon Sparks",
 BookTitle = "Determinants of Investment Behavior",
 Publisher = "NBER",
 pages = "301-332",
 year = "1967",
 URL = "http://www.nber.org/chapters/c1239",
}
@book{NBERferb67-1,
 title = "Determinants of Investment Behavior",
 author = "Robert Ferber",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1967",
 URL = "http://www.nber.org/books/ferb67-1",
}