@inbook{NBERc7503,
 Crossref = "NBERschw87-1",
 title = "Has the Growth of Money Substitutes Hindered Monetary Policy?",
 author = "Phillip Cagan and Anna J. Schwartz",
 BookTitle = "Money in Historical Perspective",
 Publisher = "University of Chicago Press",
 pages = "209-233",
 year = "1987",
 URL = "http://www.nber.org/chapters/c7503",
}
@book{NBERschw87-1,
 title = "Money in Historical Perspective",
 author = "Anna J. Schwartz",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1987",
 URL = "http://www.nber.org/books/schw87-1",
}