University and citation		Papers	 Citations   Impact        NRC ranking
ranking (out of 101 depts.)     (total)  (total)     (citations/   (147 depts.)
                                                     paper)

 1. Princeton University	4,252	 88,150	     20.7	     2
 2. Harvard University		3,541	 72,372	     20.4	     1
 3. Tulane University 		  265	  5,338	     20.1	   115.5
 4. UC Santa Barbara		4,306	 83,256	     19.3	    10
 5. University of Chicago	2,439	 45,729	     18.8	     7
 6. Brandeis University		  559	 10,339	     18.5	    42.5
 7. UC Santa Cruz		  709	 13,068	     18.4	    47.5
 8. Calif. Institute of Tech.	4,027	 72,393	     18.0	     5
 9. Univ. of Pennsylvania	3,047	 53,854	     17.7	    17
10. Rockefeller University	  523	  8,597	     16.4	    30
11. Stanford University		6,659	105,736	     15.9	     9
12. Yale University		1,971	 31,109	     15.8	    13
13. S.U.N.Y. at Stony Brook	3,052	 43,871	     14.4	    22.5
14. Mass. Inst. of Tech.	9,382	132,948	     14.2	     3.5
15. UC Berkeley			5,474	 75,411	     13.8	     3.5
16. Cornell University		4,776	 63,605	     13.3	     6
17. UC Riverside		  661	  8,497	     12.9	    68.5
18. Michigan State Univ.	1,995	 25,585	     12.8	    32
19. Tufts University		  623	  7,953	     12.8	    77
20. Illinois (Urb.-Cham.)	6,627	 84,229	     12.7	     8

Statistics on papers and citations compiled by the Institute for Scientific Information, Philadelphia.

National Research Council (NRC) rankings determined by "reputational survey" of faculty members across the country and published in Research-Doctorate Programs in the United States: Continuity and Change (National Academy Press, Washington, DC, 1995). A ranking that includes a half-point (e.g., 3.5) means that two or more institutions tied for that placement in the NRC survey.