@inbook{NBERc6101,
 Crossref = "NBERclot93-1",
 title = "How Would Universities Respond to Increased Federal Support for Graduate Students?",
 author = "Ronald G. Ehrenberg and Daniel I. Rees and Dominic J. Brewer",
 BookTitle = "Studies of Supply and Demand in Higher Education",
 Publisher = "University of Chicago Press",
 pages = "183-210",
 year = "1993",
 month = "January",
 URL = "http://www.nber.org/chapters/c6101",
}
@book{NBERclot93-1,
 title = "Studies of Supply and Demand in Higher Education",
 author = "Charles T. Clotfelter and Michael Rothschild",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1993",
 URL = "http://www.nber.org/books/clot93-1",
}