| Referrer | Total referrals | 2026-09 | 2026-08 | 2026-07 | 2026-06 |
|---|---|---|---|---|---|
| 500,210 | 102,414 | 161,190 | 104,133 | 132,473 | |
| eScholarship | 380,706 | 95,370 | 122,381 | 63,495 | 99,460 |
| cdlib.org | 53,613 | 900 | 43,900 | 1,629 | 7,184 |
| Bing | 37,175 | 7,202 | 15,907 | 3,340 | 10,726 |
| Yahoo | 20,737 | 4,841 | 9,175 | 1,660 | 5,061 |
| baidu.org | 19,431 | 4,726 | 9,008 | 1,499 | 4,198 |
| yandex.org | 19,332 | 4,634 | 9,003 | 1,458 | 4,237 |
| ucop.edu | 15,931 | 2,303 | 4,875 | 8,753 | |
| osti.gov | 7,069 | 749 | 3,318 | 3,002 | |
| chatgpTwitterm | 5,994 | 1,340 | 1,396 | 1,495 | 1,763 |
| berkeley.edu | 5,199 | 2,177 | 2,946 | 76 | |
| nih.gov | 4,988 | 1,673 | 1,050 | 943 | 1,322 |
| duckduckgo.com | 3,546 | 244 | 2,812 | 241 | 249 |
| consensus.app | 1,743 | 510 | 396 | 402 | 435 |
| doi.org | 1,198 | 740 | 171 | 287 | |
| kiphub.com | 1,114 | 1,114 | |||
| perplexity.ai | 905 | 340 | 201 | 364 | |
| baidu.com | 834 | 834 | |||
| europepmc.org | 657 | 292 | 365 | ||
| yandex.edu | 535 | 535 | |||
| edu.pl | 523 | 523 | |||
| uni-kassel.de | 405 | 146 | 259 | ||
| 334 | 148 | 65 | 37 | 84 | |
| substack.com | 189 | 189 | |||
| clarivate.cn | 189 | 126 | 63 | ||
| other | 97,394 | 9,647 | 23,298 | 55,687 | 8,762 |
Note: Due to the evolving nature of web traffic, the data presented here should be considered approximate and subject to revision. Learn more.