@inbook{NBERc3596,
 Crossref = "NBERauto07-1",
 title = "The Role of Temporary Help Employment in Low-Wage Worker Advancement",
 author = "Carolyn J. Heinrich and Peter R. Mueser and Kenneth R. Troske",
 BookTitle = "Studies of Labor Market Intermediation ",
 Publisher = "University of Chicago Press",
 pages = "399-436",
 year = "2009",
 month = "November",
 URL = "http://www.nber.org/chapters/c3596",
}
@book{NBERauto07-1,
 title = "Studies of Labor Market Intermediation ",
 author = "David H. Autor",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "2009",
 URL = "http://www.nber.org/books/auto07-1",
}