@inbook{NBERc11595,
 Crossref = "NBERclot08-1",
 title = "The Economics of University Science and the Role of Foreign Graduate Students and Postdoctoral Scholars",
 author = "Grant C. Black and Paula E. Stephan",
 BookTitle = "American Universities in a Global Market",
 Publisher = "University of Chicago Press",
 pages = "129-161",
 year = "2010",
 month = "May",
 URL = "http://www.nber.org/chapters/c11595",
}
@book{NBERclot08-1,
 title = "American Universities in a Global Market",
 author = "Charles T. Clotfelter",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "2010",
 URL = "http://www.nber.org/books/clot08-1",
}