1. Office of Science and Technology Policy A Renewed Commitment to Science and Technology. (OSTP, 2009); available at
http://www.whitehouse.gov/files/documents/ostp/budget/FY2010RD.pdf
2. National Science Foundation Science and Engineering Indicators 2008 Table 5.7 (NSF, 2008); available at
http://www.nsf.gov/statistics/seind08/tables.htm
3. Lombardi, J. V., Craig, D. D., Capaldi, E. D. & Gater, D. S. The Top American Research Universities. An Occasional Paper from the Lombardi Program on Measuring University Performance. (University of Florida, 2000).
4. Lombardi, J. V., Capaldi, E. D. & Abbey, C. W. Top American Research Universities. 2007 Annual Report. (Center for Measuring University Performance, 2007).
5. Capaldi, E. D., Lombardi, J. V., Abbey, C. W. & Craig. D. D. Top American Research Universities. 2008 Annual Report (Center for Measuring University Performance, 2008).