| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| crossref doi link | 1.47 | 0.5 | 6952 | 29 | 17 |
| crossref | 0.41 | 1 | 5527 | 12 | 8 |
| doi | 0.45 | 1 | 4703 | 17 | 3 |
| link | 1.63 | 1 | 5994 | 100 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| crossref doi link | 0.28 | 0.7 | 9584 | 96 |
| crossref doi lookup | 1.66 | 0.2 | 8488 | 86 |
