| 12,004,592 | 64.85% | preserved and publicly accessible (bright) | |
| 2,490,311 | 13.46% | preserved but not publicly accessible (dark) | |
| 4,016,561 | 21.7% | no known independent preservation | |
| 18,511,464 | total |
| Release Type | Total Count | Coverage |
|---|---|---|
| article-journal | 15,670,982 |
|
| article | 2,824,667 |
|
| paper-conference | 15,815 |
|