@inbook{NBERc7939,
 Crossref = "NBERfrie86-1",
 title = "Risk and Required Returns on Debt and Equity",
 author = "Zvi Bodie and Alex Kane and Robert L. McDonald",
 BookTitle = "Financing Corporate Capital Formation",
 Publisher = "University of Chicago Press",
 pages = "51-66",
 year = "1986",
 URL = "http://www.nber.org/chapters/c7939",
}
@book{NBERfrie86-1,
 title = "Financing Corporate Capital Formation",
 author = "Benjamin M. Friedman",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1986",
 URL = "http://www.nber.org/books/frie86-1",
}