Country | Documents | Citable documents | Citations | Self-Citations | Citations per Document | H index | ||
---|---|---|---|---|---|---|---|---|
1 | United States | 20093 | 19940 | 1359270 | 653445 | 67.65 | 1073 | |
2 | Japan | 5681 | 5664 | 286787 | 68272 | 50.48 | 517 |
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