Expand description
Crossref source — DOI metadata + OA URL discovery via link[] array.
Spec: docs/SOURCES.md §4 (Crossref). No auth; polite-pool User-Agent
contact email is REQUIRED — see CrossrefSource::new.
Structs§
- Crossref
Source - Crossref
Sourceimpl — DOI → metadata; OA URL viamessage.link[].