@inbook{NBERc8896,
 Crossref = "NBERrose86-1",
 title = "Explaining the Yield Spread between Taxable and Tax-exempt Bonds : The Role of Expected Tax Policy ",
 author = "James M. Poterba",
 BookTitle = "Studies in State and Local Public Finance",
 Publisher = "University of Chicago Press",
 pages = "5-52",
 year = "1986",
 URL = "http://www.nber.org/chapters/c8896",
}
@book{NBERrose86-1,
 title = "Studies in State and Local Public Finance",
 author = "Harvey S. Rosen",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1986",
 URL = "http://www.nber.org/books/rose86-1",
}