@inbook{NBERc1524,
 Crossref = "NBERcaga66-1",
 title = "Summary of Findings",
 author = "Philip Cagan",
 BookTitle = "Changes in the Cyclical Behavior of Interest Rates",
 Publisher = "UMI",
 pages = "26-32",
 year = "1966",
 URL = "http://www.nber.org/chapters/c1524",
}
@book{NBERcaga66-1,
 title = "Changes in the Cyclical Behavior of Interest Rates",
 author = "Philip Cagan",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "UMI",
 year = "1966",
 URL = "http://www.nber.org/books/caga66-1",
}