@inbook{NBERc4821,
 Crossref = "NBERlutz45-1",
 title = "Analysis of "Free" Cash",
 author = "Friedrich A. Lutz",
 BookTitle = "Corporate Cash Balances, 1914-43: Manufacturing and Trade",
 Publisher = "NBER",
 pages = "51-59",
 year = "1945",
 URL = "http://www.nber.org/chapters/c4821",
}
@book{NBERlutz45-1,
 title = "Corporate Cash Balances, 1914-43: Manufacturing and Trade",
 author = "Friedrich A. Lutz",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1945",
 URL = "http://www.nber.org/books/lutz45-1",
}