@inbook{NBERc6942,
 Crossref = "NBERbrad98-1",
 title = "Organizational Form and Insurance Company Performance: Stocks versus Mutuals",
 author = "Patricia Born and William M. Gentry and W. Kip Viscusi and Richard J. Zeckhauser",
 BookTitle = "The Economics of Property-Casualty Insurance",
 Publisher = "University of Chicago Press",
 pages = "167-192",
 year = "1998",
 month = "January",
 URL = "http://www.nber.org/chapters/c6942",
}
@book{NBERbrad98-1,
 title = "The Economics of Property-Casualty Insurance",
 author = "David F. Bradford",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1998",
 URL = "http://www.nber.org/books/brad98-1",
}