@inbook{NBERc7687,
 Crossref = "NBERfeld87-2",
 title = "Corporate Capital Budgeting Practices and the Effects of Tax Policies on Investment",
 author = "Lawrence H. Summers",
 BookTitle = "Taxes and Capital Formation",
 Publisher = "University of Chicago Press",
 pages = "27-36",
 year = "1987",
 URL = "http://www.nber.org/chapters/c7687",
}
@book{NBERfeld87-2,
 title = "Taxes and Capital Formation",
 author = "Martin Feldstein",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1987",
 URL = "http://www.nber.org/books/feld87-2",
}