@inbook{NBERc1474,
 Crossref = "NBERbrow67-1",
 title = "Comments on the Cobb-Douglas Production Function",
 author = "Paul H. Douglas",
 BookTitle = "The Theory and Empirical Analysis of Production",
 Publisher = "Columbia University Press",
 pages = "15-22",
 year = "1967",
 URL = "http://www.nber.org/chapters/c1474",
}
@book{NBERbrow67-1,
 title = "The Theory and Empirical Analysis of Production",
 author = "Murray Brown",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "Columbia University Press",
 year = "1967",
 URL = "http://www.nber.org/books/brow67-1",
}