Country | Documents | Citable documents | Citations | Self-Citations | Citations per Document | H index | ||
---|---|---|---|---|---|---|---|---|
1 | United States | 20283 | 20001 | 1632638 | 734657 | 80.49 | 1073 | |
2 | Japan | 5822 | 5768 | 330802 | 66955 | 56.82 | 517 |
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