@inbook{NBERc8453,
 Crossref = "NBERhult91-1",
 title = "Compositional Change of Heterogeneous Labor Input and Economic Growth in Japan",
 author = "Hajime Imamura",
 BookTitle = "Productivity Growth in Japan and the United States",
 Publisher = "University of Chicago Press",
 pages = "349-384",
 year = "1991",
 month = "January",
 URL = "http://www.nber.org/chapters/c8453",
}
@book{NBERhult91-1,
 title = "Productivity Growth in Japan and the United States",
 author = "Charles R. Hulten",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1991",
 URL = "http://www.nber.org/books/hult91-1",
}