Metadata and content type overview

All content registered with Crossref includes metadata, which includes:

• Bibliographic metadata (such as author, article titles, journal names)
• Funding metadata
• License metadata
• Relationships between DOIs
• Update or retraction information (via CrossMark)
• JATS-formatted abstracts

Crossref content types

Crossref collects metadata for many items relevant to scholarly communication.  Our defined content types are:

• Journals:  includes records for journal articles, as well as supplemental materials
• Books: book-level and/or chapter-level records, books can be deposited as a monograph, series, or set.
• Conference Proceedings: information about a single conference and records for each conference paper/proceeding
• Datasets
• Dissertations
• Peer Reviews
• Posted content: consists of preprints, eprints, working papers, reports, dissertations, and many other types of content that has been posted but not formally published.
• Reports / working papers
• Standards
• Components: typically assigned to parts of a whole, most commonly including figures, tables, and supplemental materials for a journal article.