| 15,273,910 | 68.86% | preserved and publicly accessible (bright) | |
| 3,272,944 | 14.76% | preserved but not publicly accessible (dark) | |
| 3,637,005 | 16.4% | no known independent preservation | |
| 22,183,859 | total |
| Release Type | Total Count | Coverage |
|---|---|---|
| article-journal | 18,793,938 |
|
| article | 3,367,358 |
|
| paper-conference | 22,563 |
|