@inbook{NBERc1443,
 Crossref = "NBERkuzn61-1",
 title = "Introduction to "Capital in the American Economy: Its Formation and Financing"",
 author = "Simon Kuznets and Elizabeth Jenks",
 pages = "3-14",
 year = "1961",
 URL = "http://www.nber.org/chapters/c1443",
}