@inbook{NBERc3356,
 Crossref = "NBERmarg70-1",
 title = "Cost Functions and Budgets (Cost Considerations in Systems Analysis)",
 author = "G H. Fisher",
 BookTitle = "The Analysis of Public Output",
 Publisher = "UMI",
 pages = "231-266",
 year = "1970",
 URL = "http://www.nber.org/chapters/c3356",
}
@book{NBERmarg70-1,
 title = "The Analysis of Public Output",
 author = "Julius Margolis",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "UMI",
 year = "1970",
 URL = "http://www.nber.org/books/marg70-1",
}