Not sure how this is legal since the book set itself does not have a DOI.

https://research.vu.nl/en/publications/on-the-impact-of-sameas-on-schema-matching

```turtle @prefix : http://www.sparontologies.net/example/ . @prefix cito: http://purl.org/spar/cito/ . @prefix c4o: http://purl.org/spar/c4o/ . @prefix oa: http://www.w3.org/ns/oa# . @prefix per: http://data.semanticweb.org/person/ .

:annotation a oa:Annotation ; oa:hasBody :citation ; oa:hasTarget :in-text-ref-pointer ; oa:annotatedBy per:silvio-peroni .

:citation a cito:Citation; cito:hasCitingEntity :paper-a ; cito:hasCitationEvent cito:extends ; cito:hasCitedEntity :paper-b .

:in-text-ref-pointer a c4o:InTextReferencePointer ; c4o:hasContent "[6]" . ```

```turtle @prefix : http://www.sparontologies.net/example/ . @prefix cito: http://purl.org/spar/cito . @prefix cnt: http://www.w3.org/2011/content# . @prefix oa: http://www.w3.org/ns/oa# .

:annotation a oa:Annotation; oa:motivatedBy oa:commenting ; oa:hasBody :comment ; oa:hasTarget :citation .

:comment a cnt:ContentAsText ; cnt:chars "I'm citing that paper because it initiated this whole new field of research." .

:citation a cito:Citation; cito:hasCitingEntity :paper-a ; cito:hasCitationCharacterization cito:cites ; cito:hasCitedEntity :paper-b . ```

console $ curl -LH "Accept: application/vnd.schemaorg.ld+json" https://doi.org/10.5438/4K3M-NYVG { "@context": "http://schema.org", "@type": "ScholarlyArticle", "@id": "https://doi.org/10.5438/4k3m-nyvg", "url": "https://blog.datacite.org/eating-your-own-dog-food/", "additionalType": "BlogPosting", "name": "Eating your own Dog Food", "author": { "name": "Martin Fenner", "givenName": "Martin", "familyName": "Fenner", "@id": "https://orcid.org/0000-0003-1419-2405" }, "description": "Eating your own dog food is a slang term to describe that an organization should itself use the products and services it provides. For DataCite this means that we should use DOIs with appropriate metadata and strategies for long-term preservation for...", "license": "https://creativecommons.org/licenses/by/4.0/legalcode", "version": "1.0", "keywords": "datacite, doi, metadata, FOS: Computer and information sciences", "inLanguage": "en", "dateCreated": "2016-12-20", "datePublished": "2016-12-20", "dateModified": "2016-12-20", "isPartOf": { "@id": "https://doi.org/10.5438/0000-00ss", "@type": "CreativeWork" }, "citation": [ { "@id": "https://doi.org/10.5438/0012", "@type": "CreativeWork" }, { "@id": "https://doi.org/10.5438/55e5-t5c0", "@type": "CreativeWork" } ], "schemaVersion": "http://datacite.org/schema/kernel-4", "periodical": { "@type": "Series", "identifier": "10.5438/0000-00SS", "identifierType": "DOI" }, "publisher": { "@type": "Organization", "name": "DataCite" }, "provider": { "@type": "Organization", "name": "datacite" } }

http://doi.crossref.org/getPrefixPublisher/?prefix=all

json [ { "oci": "02001010806360107050663080702026306630509-0200101080636102703040309", "citing": "10.1186/1756-8722-6-59", "cited": "10.1186/ar3439", "creation": "2013", "timespan": "P2Y", "journal_sc": "no", "author_sc": "no" }, { "oci": "02001010806360107050663080702026306630509-0200101080636102704000806", "citing": "10.1186/1756-8722-6-59", "cited": "10.1186/ar4086", "creation": "2013", "timespan": "P1Y", "journal_sc": "no", "author_sc": "no" }, { "oci": "02001010806360107050663080702026306630509-020010200003619122437020001023704023707090006", "citing": "10.1186/1756-8722-6-59", "cited": "10.1200/jco.2012.42.7906", "creation": "2013", "timespan": "P0Y", "journal_sc": "no", "author_sc": "no" }, { "oci": "02001010806360107050663080702026306630509-02003010009360008080300010805370200010237060604070907", "citing": "10.1186/1756-8722-6-59", "cited": "10.3109/08830185.2012.664797", "creation": "2013", "timespan": "P0Y", "journal_sc": "no", "author_sc": "no" }

COCI, the OpenCitations Index of Crossref open DOI-to-DOI citations, is an RDF dataset containing details of all the citations that are specified by the open references to DOI-identified works present in Crossref, as of the latest COCI update*

[...]

Open Citation Identifiers

Each Open Citation Identifier [[OCI]] has a simple structure: the lower-case letters "oci" followed by a colon, followed by two numbers separated by a dash (e.g. https://w3id.org/oc/index/coci/ci/02001010806360107050663080702026306630509-02001010806360107050663080702026305630301), in which the first number identifies the citing work and the second number identifies the cited work.

• EXCEPTIONS to DOI rules

• DOIs RULES

• DOI

• Crossref