@inbook{NBERc8781,
 Crossref = "NBERlync94-1",
 title = "The Impact of Previous Training on Productivity and Wages",
 author = "John Bishop",
 BookTitle = "Training and the Private Sector",
 Publisher = "University of Chicago Press",
 pages = "161-200",
 year = "1994",
 month = "January",
 URL = "http://www.nber.org/chapters/c8781",
}
@book{NBERlync94-1,
 title = "Training and the Private Sector",
 author = "Lisa M. Lynch",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1994",
 URL = "http://www.nber.org/books/lync94-1",
}