Types of references according to if and when a DID was added. The first and second columns indicate the names that we use to identify the type and subtype of reference respectively. The third column describes the subtype of references based on when the DID was added
| Type . | Subtype . | Description . |
|---|---|---|
| DID Reference (DID-R) | DID-Born Reference (DBorn) | References that already included a DID when they were created. |
| DID-Lagged Reference (DLag) | References that did not include a DID when they were created, but were assigned a DID at a later point, before the time of our data collection. | |
| No-DID Reference (No-DID) | References that did not include a DID by the time of data collection. These might receive a DID later (after our data collection) if a DID in fact exists for the referenced publication. |
| Type . | Subtype . | Description . |
|---|---|---|
| DID Reference (DID-R) | DID-Born Reference (DBorn) | References that already included a DID when they were created. |
| DID-Lagged Reference (DLag) | References that did not include a DID when they were created, but were assigned a DID at a later point, before the time of our data collection. | |
| No-DID Reference (No-DID) | References that did not include a DID by the time of data collection. These might receive a DID later (after our data collection) if a DID in fact exists for the referenced publication. |