Country | Documents | Citable documents | Citations | Self-Citations | Citations per Document | H index | ||
---|---|---|---|---|---|---|---|---|
1 | United States | 21250 | 20830 | 1035459 | 495240 | 48.73 | 949 | |
2 | United Kingdom | 5741 | 5686 | 308508 | 80868 | 53.74 | 661 |
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