ISSN

ISSN
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Name	ISSN
Caption	International Standard Serial Number
Introduced	1975
Governing body	International Organization for Standardization; UNESCO
Format	eight-digit numeric code
Example	1234-5679

ISSN

The International Standard Serial Number is a standardized identifier for serial publications created to aid cataloguing, discovery, and management across libraries and publishing industries. It functions alongside other identifiers used by institutions such as Library of Congress, British Library, National Diet Library, Bibliothèque nationale de France, and Deutsche Nationalbibliothek to track periodicals, journals, newspapers, and monographic series. Major bibliographic projects and services including OCLC, WorldCat, Scopus, Web of Science, and CrossRef rely on it for metadata interoperability and linking between resources.

Overview

The identifier is an eight-digit code assigned to continuing resources to distinguish titles such as academic journals like Nature (journal), Science (journal), The Lancet, and magazines like Time (magazine), National Geographic (magazine), Vogue (magazine). Libraries and consortia including Research Libraries UK, Council of Australian University Librarians, Library and Archives Canada, National Library of Australia, and Biblioteca Nacional de España use the identifier in catalog records alongside classification schemes like Dewey Decimal Classification and Library of Congress Classification. Large publishers—Elsevier, Springer Nature, Wiley-Blackwell, Taylor & Francis, SAGE Publications—include the identifier in mastheads and metadata to facilitate indexing by aggregators such as JSTOR, EBSCO, ProQuest, and PubMed. Major standards organizations including ISO and agencies like UNESCO coordinate policies affecting serial identification globally.

Structure and Assignment

The code comprises two groups of four digits separated by a hyphen, where the final digit is a check digit calculated by a mod 11 algorithm similar to schemes used by identifiers overseen by ISO and national bibliographic agencies. National and regional centers—examples include the ISSN National Centre (France), ISSN International Centre hosted in Paris, and national centres in countries such as United States, United Kingdom, Japan, Germany, and Brazil—process applications from publishers and institutions like Oxford University Press, Cambridge University Press, Harvard University Press, and MIT Press. Assignment procedures intersect with cataloguing workflows used by British Library, New York Public Library, Smithsonian Institution, and university libraries at Harvard University, University of Oxford, Stanford University, and University of Tokyo.

Usage and Applications

The identifier supports citation linking in bibliographic databases used by researchers affiliated with institutions such as Harvard Medical School, Johns Hopkins University, University of Cambridge, Massachusetts Institute of Technology, and University of California, Berkeley. Metadata services like CrossRef, DOAJ, ORCID profiles, and subscription platforms including JSTOR, ScienceDirect, Wiley Online Library, and Project MUSE consume it to disambiguate serials. National libraries—National Library of Medicine, Biblioteca Nacional de México, Russian State Library, National Library of China—and bibliographic utilities like OCLC and Ex Libris integrate the identifier into cataloguing records and discovery tools used by readers of periodicals such as The New York Times, The Guardian, Le Monde, Frankfurter Allgemeine Zeitung, and Asahi Shimbun.

ISSN-L and Linking ISSN

A linking form known as ISSN-L aggregates different media versions of a serial—print, electronic, and other manifestations—into a single identifier to enable cross-version linking in systems used by CrossRef, Google Scholar, Scopus, Web of Science, and library link resolvers like SFX and LinkSource. Publishers such as Elsevier, Wiley, Springer Nature, and Taylor & Francis apply the linking form in metadata distributed to indexing services and institutional repositories at arXiv, Zenodo, and university presses like Princeton University Press and Yale University Press to support citation consistency across platforms including Mendeley and Zotero.

Governance and Administration

Oversight involves an international centre and a network of national centres coordinated under standards developed by ISO and policy engagement from UNESCO. The international centre collaborates with national agencies like National Library of Finland, National Library of Sweden, National Library of Norway, National Library of Israel, and regional partners across continents. Stakeholders include major publishers—Elsevier, Springer Nature, Wiley-Blackwell—research infrastructures such as CERN data services, bibliographic aggregators like OCLC and ProQuest, and library associations including International Federation of Library Associations and Institutions and Association of Research Libraries.

Criticisms and Limitations

Critiques from librarians, publishers, and technologists at institutions such as Harvard Library, Yale University Library, National Library of Scotland, Columbia University and organizations like Creative Commons focus on coverage gaps for non-traditional serials, challenges in retrospective assignment for historical titles held by archives such as British Library and Bibliothèque nationale de France, and ambiguities when serials change title or medium affecting databases like Scopus and Web of Science. Interoperability limits arise when marketplaces and platforms—Amazon (company), Google Books, Apple Books—use alternative identifiers or inconsistent metadata, prompting discussion among consortia such as SCOAP3 and initiatives like Project COUNTER to improve metrics and discovery practices.

Category:Identifiers