Category Archives: Bibliographic references

COCI has surpassed 700M citations

Posted on May 13, 2020 by

We are excited to share that COCI, the OpenCitations Index of Crossref open DOI-to-DOI citations, was on 12 May 2020 extended with more than 47 million additional citations, and has reached a total number of more than 702 million DOI-to-DOI citation links between more than 58 million bibliographic entities. Continue reading →

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OpenCitations described

Posted on February 26, 2020 by

OpenCitations is an infrastructure organization for open scholarship dedicated to the publication of open bibliographic and citation data. We at OpenCitations are proud to announce the publication, in the first issue of Quantitative Science Studies, of a canonical paper in … Continue reading →

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The first issue of Quantitative Science Studies

Posted on February 26, 2020 by

The memorable date 20/02/2020 saw the publication by MIT Press of the first issue of Volume One of a new journal, Quantitative Science Studies (QSS), the official open access journal of the International Society for Scientometrics and Informetrics (ISSI). QSS’s … Continue reading →

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Introducing InTRePIDs – In-Text Reference Pointer Identifiers

Posted on January 30, 2020 by

Rationale Readers of this blog will be familiar with Open Citation Identifiers (OCIs), described in an earlier post and formally defined in [1]. OCIs enable bibliographic citations, treated as first class information entities, to be uniquely identified and referenced, and … Continue reading →

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COCI, the OpenCitations Index of Crossref open DOI-to-DOI references

Posted on July 12, 2018 by

In a previous series of blog posts we proposed the treatment of bibliographic citations as first-class data entities, permitting citations to be endowed with descriptive properties. In doing so, we outlined some specific requirements, namely that the citations should be … Continue reading →

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Workshop on Open Citations

Posted on April 17, 2018 by

OpenCitations [1], the EXCITE Project [2] and Europe PubMed Central [3] are pleased to announce a Workshop on Open Citations at the University of Bologna in Bologna, Italy [4] on 3-5 September – https://workshop-oc.github.io. Format and topics Day One and … Continue reading →

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Early adopters of the OpenCitations Data Model

Posted on March 23, 2018 by

OpenCitations is very pleased to announce its collaboration with four new scholarly Research and Development projects that are early adopters of the recently updated OpenCitations Data Model, described in this blog post. The four projects are similar, in that they … Continue reading →

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Citations as First-Class Data Entities: The Open Citation Identifier Resolution Service

Posted on March 15, 2018 by

Requirements for citations to be treated as first-class data entities In my introductory blog post, I listed five requirements for the treatment of citations as first-class data entities.  The fifth and final of these requirements is that there must be … Continue reading →

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Citations as First-Class Data Entities: Open Citation Identifiers

Posted on March 12, 2018 by

Requirements for citations to be treated as First-Class Data Entities In my introductory blog post, I listed five requirements for the treatment of citations as first-class data entities.  The fourth of these requirements is that they must be identifiable using … Continue reading →

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Citations as First-Class Data Entities: The OpenCitations Corpus

Posted on March 4, 2018 by

Requirements for citations to be treated as First-Class Data Entities In my introductory blog post, I listed five requirements for the treatment of citations as first-class data entities.  The third of these requirements is that they must be storable, searchable … Continue reading →

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