Data sources | The ISSN Portal

The ISSN Portal provides bibliographic records enriched by these data sources.

ATLA RDB with ATLAS PLUS CAB Abstracts Où publier ? Crossref Global Health EconLit GeoRef Linguistics Abstracts Medline / National Library of Medicine Mir@bel PsycINFO® Scopus SJR (SCImago Journal Rank) SNIP Citescore Catalogo (Latindex) DOAJ (Directory of Open Access Journals) Pubmed Central PMC The Keepers

Publisher	American Theological Library Association - Religion DataBase
URL	https://www.atla.com http://dl.atla.com
Type of service	Indexing, abstracting and citation services
Disciplines	Religion & theology
Presentation	The ATLA Religion Database® (ATLA RDB®) is the premier index to journal articles, book reviews, and collections of essays in all fields of religion. ATLASerials PLUS™ (ATLAS PLUS™) is a full-text collection. In April 2018, ATLA merged the ATLA Catholic Periodical and Literature Index® (ATLA CPLI®) into the ATLA Religion Database® (ATLA RDB®).
Types of resources	Journal articles, book reviews, essays
Date created	First published in print in 1949, released electronically in 1981
Publication coverage dates	From 1949 to present and retrospective indexing for some journal issues as far back as the nineteenth century (1818)
Geographical coverage	International (33 countries, 16 languages)
Classification	Enriched LCSH (Library of Congress Subject Headings). As a member of the CONSER programme, ATLA cooperates with the Library of Congress to index serial publications. ATLA's vocabulary is exposed in LOD: http://id.loc.gov/vocabulary/subjectSchemes/atla.html
Selection criteria / Methodology	Journals are selected for inclusion according to their scholarly merit and scope. https://www.atla.com/products/publishing/Pages/Evaluation-RDB.aspx
Number of currently indexed resources	~ 1,000 titles
Annual growth	80 titles
Updating frequency	Monthly

Publisher	CABI (Centre for Agriculture and Biosciences International)
URL	http://www.cabi.org/publishing-products/online-information-resources/cab-abstracts
Type of service	Indexing, abstracting and citation services
Disciplines	Applied life sciences
Presentation	CAB Abstracts is the leading English-language bibliographic information service providing access to the world’s applied life sciences literature. It comes with CABI Full Text, giving users automatic access to over 410,000 journal articles, conference papers and reports (80% of which are not available electronically anywhere else).
Types of resources	Journals, conferences & discussion papers, reports, bulletins, newsletters
Date created	1973
Publication coverage dates	From 1973 to present 1910 to present (archives included)
Geographical coverage	International (over 120 countries)
Classification	https://www.cabi.org/cabthesaurus/
Selection criteria / Methodology	- Scientific specialists select relevant records from more than 8,000 serials, books and conference proceedings on the basis of quality and subject relevance and following CABI’s journal selection criteria guidelines. - Selection criteria: https://www.cabi.org/uploads/CABI/publishing/fulltext-products/Journal%20Selection.pdf - Includes less well-known and non-English journals and those published by independent and learned publishers.
Number of currently indexed resources	1,044 journal titles
Annual growth	350,000 abstracts d'articles, 35%
Updating frequency	Monthly

Publisher	CIRAD-Centre de Coopération Internationale en Recherche Agronomique pour le Développement / Centre for International Cooperation in Agronomic Research for Development (France)
URL	http://ou-publier.cirad.fr/
Type of service	Indexing and describing scientific journals
Disciplines	Life sciences, Human and Social sciences, Engineering sciences applied to Agriculture
Presentation	Où publier ? (Where to publish? ) is a French language website which describes more than 2,500 scientific journals. Researchers can identify and choose the journals best suited to their subject matter and their publication projects.
Types of resources	Journals
Date created	2011
Publication coverage dates
Geographical coverage	International, Tropical regions
Classification	http://ou-publier.cirad.fr/formulaire.php
Selection criteria / Methodology	The data is supplied by the CIRAD information specialists and by the researchers’s suggestions. The first selection criterias are about topics (Life sciences, Social sciences, Engineering sciences applied to Agriculture), scientific characteristics (peer-reviewing), ethics in publishing (journals must comply with a set of editorial quality criteria). The database presents for each journal: scope and topics covered, journal reputation (impact factor from JCR® or SJR from SCImago), open access policy, types of articles, publication language, publisher copyright and self-archiving policies from the SHERPA/RoMEO and Héloïse platforms.
Number of currently indexed resources	2,500 journal titles
Annual growth	~ 200 journal titles
Updating frequency	Continuously

Publisher	Publishers International Linking Association, Inc. (PILA)
URL	https://www.crossref.org/
Type of service	Digital Object Identifier (DOI) Registration Agency
Disciplines	Interdisciplinary
Presentation	Crossref is a non-profit association. It was launched in early 2000 as a cooperative effort among publishers to enable persistent cross-publisher citation linking in online academic journals. Crossref interlinks millions of items from a variety of content types, including journals, books, conference proceedings, working papers, technical reports, and data sets. Linked content includes materials from scientific, technical and medical (STM), and social sciences and humanities (SSH) disciplines.
Types of resources	Journals, books, conference proceedings, working papers, technical reports, and data sets
Date created	2000
Publication coverage dates
Geographical coverage	International
Classification
Selection criteria / Methodology
Number of currently indexed resources	more than 72,000 journals
Annual growth	~10,000 journals 16% for journals
Updating frequency	Daily

Publisher	CABI
URL	http://www.cabi.org/publishing-products/online-information-resources/global-health
Type of service	Indexing, abstracting and citation services
Disciplines	Public health
Presentation	Global Health is the only specialist bibliographic abstracting and indexing database dedicated to public health, completing the picture of international medical and health research by capturing key literature that is not covered by other databases.
Types of resources	Journals, reports, books, conferences
Date created	1973
Publication coverage dates	From 1973 to present
Geographical coverage	International (over 100 countries, 50 languages)
Classification	https://www.cabi.org/cabthesaurus/
Selection criteria / Methodology	- Scientific specialists select relevant records from more than 8,000 serials, books and conference proceedings on the basis of quality and subject relevance and following CABI’s journal selection criteria guidelines. - Selection criteria: https://www.cabi.org/uploads/CABI/publishing/fulltext-products/Journal%20Selection.pdf - Includes less well-known and non-English journals and those published by independent and learned publishers.
Number of currently indexed resources	7,000 titles
Annual growth	150,000 records (~ 5%)
Updating frequency	Monthly

Publisher	American Economic Association
URL	http://www.aeaweb.org/econlit
Type of service	Indexing, abstracting and citation services
Disciplines	Economics
Presentation	An expanded version of the Journal of Economic Literature (JEL) indexes of journals, books, and dissertations, EconLit covers both economic theory and application. Over 80% of all current records include abstracts. Also included are full-text of book reviews published in the Journal of Economic Literature since 1993. The database also includes links to full-text of some 40,000 working papers in economics.
Types of resources	Journals (1,000), books, dissertations, working papers
Date created	1969
Publication coverage dates	From 1969 to present
Geographical coverage	International
Classification	JEL
Selection criteria / Methodology	Peer-reviewed economic content
Number of currently indexed resources	1,000 journal titles
Annual growth	30,000 records
Updating frequency	Monthly

Publisher	American Geosciences Institute
URL	http://www.americangeosciences.org/georef/georef-information-services
Type of service	Indexing, abstracting and citation services
Disciplines	Geosciences
Presentation	GeoRef is the most comprehensive database in the geosciences worldwide.
Types of resources	Journal articles, books, maps, conference papers, reports and theses
Date created	1966
Publication coverage dates	From 1666 to present (US) and from 1933 to present (rest of the world)
Geographical coverage	International
Classification	GeoRef Thesaurus : https://pubs.geoscienceworld.org/georef
Selection criteria / Methodology
Number of currently indexed resources	3,500 journals
Annual growth	80,000 records
Updating frequency	Biweekly with approximately 3,000 new records added per update.

Publisher	Wiley-Blackwell
URL	http://www.linguisticsabstracts.com
Type of service	Indexing, abstracting and citation services
Disciplines	Linguistics
Presentation	Edited by the Department of Linguistics / University of Alberta (Canada), Linguistics Abstracts Online provides indexing to over 800 journals in linguistics. English-language abstracts are available for articles written in other languages. The focus is on the theory and practice of general linguistics including all the recognized "core" areas of linguistic enquiry and their major interdisciplinary points of connection.
Types of resources	Journals
Date created	1985
Publication coverage dates	From 1985 to present
Geographical coverage	International
Classification
Selection criteria / Methodology
Number of currently indexed resources	Over 120,000 linguistic abstracts from over 800 journals
Annual growth
Updating frequency	Continuously

Publisher	PubMed, U.S. National Library of Medicine
URL	http://pubmed.gov
Type of service	Indexing, abstracting and citation services
Disciplines	Life sciences with a focus on biomedicine
Presentation	MEDLINE® is the National Library of Medicine® (NLM®) journal citation database. Started in the 1960s, it now provides more than 24 million references to biomedical and life sciences journal articles back to 1946. The MEDLINE database is directly searchable from NLM as a subset of the PubMed® database.
Types of resources	Scholarly journals; a small number of newspapers, magazines, and newsletters.
Date created	1964
Publication coverage dates	From 1946 to present
Geographical coverage	International
Classification	Medical Subject Headings (MeSH®), NLM controlled vocabulary
Selection criteria / Methodology	Publishers submit journals to an NIH-chartered advisory committee, the Literature Selection Technical Review Committee (LSTRC), which reviews and recommends journals for MEDLINE. The LSTRC considers the quality of the scientific content of a journal, including originality and the importance of the content for the MEDLINE global audience, using the guidelines found on the NLM Fact Sheet MEDLINE Journal Selection: https://www.nlm.nih.gov/pubs/factsheets/jsel.html
Number of currently indexed resources	Citations from more than 5,600 scholarly journals published around the world.
Annual growth	500 titles
Updating frequency	Daily

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Publisher	Sciences Po Grenoble, Sciences Po Lyon and Bibliothèque Diderot de Lyon.
URL	https://reseau-mirabel.info/
Type of service	Knowledge base of scientific journals
Disciplines	Humanities and social sciences
Presentation	Mir@bel (Mutualisation d'Informations sur les Revues et leurs Accès dans les Bases En Ligne) is a French knowledge base of scientific journals. For each journal listed, Mir@bel offers links to the full text resource online, as well as summaries, abstracts or indexing of articles and allows you to link to many complementary sites.The information contained in Mir@bel is updated by the member libraries and publishing partners. Mir@bel integrates the identifiers of numerous external authority databases, and provides links to them. These include: JSTOR, Cairn, Érudit, Persée, OpenEdition Journals, Sherpa/Romeo, DOAJ and Wikidata.
Types of resources	Scholarly journals
Date created	2009
Publication coverage dates	From 2009 to present
Geographical coverage	France and International
Classification
Selection criteria / Methodology	A network of member libraries and publishing partners ensures the collaborative monitoring and processing of journal data.
Number of currently indexed resources	+ 13,500 journals
Annual growth
Updating frequency	Weekly

Publisher	American Psychological Association
URL	http://www.apa.org/pubs/databases/psycinfo/index.aspx
Type of service	Indexing, abstracting and citation services
Disciplines	Psychological sciences
Presentation	Since 1967, PsycINFO® has fostered the exchange of peer-reviewed research in digital format. Focused on the interdisciplinary aspects of the worldwide behavioral and social science research and literature, PsycINFO has grown to become the most trusted and comprehensive library in its domain.
Types of resources	Journals (80%), books (3%) and books chapters (8%), dissertations (12%).
Date created	1967
Publication coverage dates	From 1597 to present, with comprehensive coverage from the 1880s
Geographical coverage	International
Classification	Thesaurus of Psychological Index Terms® : http://www.apa.org/pubs/databases/training/thesaurus.aspx
Selection criteria / Methodology	Journals covered if psychologically relevant, archival, scholarly, peer-reviewed, and regularly published with titles, abstracts, and keywords in English.
Number of currently indexed resources	2,300 titles
Annual growth
Updating frequency	Twice weekly

Publisher	Elsevier
URL	http://www.elsevier.com/online-tools/scopus
Type of service	Indexing, abstracting and citation services
Disciplines	Interdisciplinary
Presentation	Scopus is the largest abstract and citation database of peer-reviewed literature. Delivering a comprehensive overview of global, interdisciplinary scientific data and literature, across all research fields, Scopus features smart tools to track, analyze and visualize research.
Types of resources	Journals, books and conference proceedings. Over 15% of peer-reviewed titles are full open access titles (according to DOAJ and/or ROAD).
Date created	2004
Publication coverage dates	From 1859 to present
Geographical coverage	International
Classification	Scopus manually adds index terms for 80% of the titles included in Scopus. These index terms are derived from thesauri that Elsevier owns or licenses, and are added to improve search recall. - Ei Thesaurus (engineering, technology, physical sciences) - Emtree medical terms (life sciences, health sciences) - MeSH (life sciences, health sciences) - GEOBASE Subject Index (geology, geography, earth and environmental sciences) - FLX terms, WTA terms (fluid sciences, textile sciences) - Regional Index (geology, geography, earth and environmental sciences) - Species Index (biology, life sciences)
Selection criteria / Methodology	The content on Scopus comes from over 5,000 publishers that must be reviewed and selected by an independent Content Selection and Advisory Board (CSAB) to be, and continue to be, indexed on Scopus. The CSAB is an international group of scientists, researchers and librarians who represent the major scientific disciplines. Any serial publication with an ISSN can be suggested for review and covered on Scopus. Journals eligible for review are evaluated on the following criteria in five categories: journal policy, content, citedness, regularity and online availability. Scopus annually re-evaluates low-performing journals based on a set of metrics and benchmarks and in comparison to peer journals in their subject fields. Content policy and selection: https://www.elsevier.com/solutions/scopus/how-scopus-works/content/content-policy-and-selection
Number of currently indexed resources	25,300 journal titles
Annual growth	750 titles
Updating frequency	Daily

Publisher	Developed by SCImago Lab (Spain) and powered by Scopus
URL	https://www.scimagojr.com
Type of service	Journal indicators, impact factors
Disciplines	Interdisciplinary
Presentation	SJR indicator measures the visibility of the scholarly journals contained in the Scopus® database from 1996. With SJR, the subject field, quality and reputation of the journal have a direct effect on the value of a citation. The SCImago Journal Rank (SJR) indicator is developed by SCImago Lab from the widely known algorithm Google PageRank™. SJR is a publicly available metric and can also be attained outside of the Scopus platform through SCImago website.
Types of resources	Journals, book series, conference proceedings
Date created	2008
Publication coverage dates	From 1996 to present Year N-3 (articles published in the previous 3 years
Geographical coverage	International
Classification
Selection criteria / Methodology	A journal's SJR is a numeric value indicating the average number of weighted citations received during a selected year per document published in that journal during the previous three years.
Number of currently indexed resources	25,300 journal titles
Annual growth	750 titles
Updating frequency	Annually

Publisher	Developed by Leiden University’s Centre for Science & Technology Studies (CWTS) in The Netherlands and powered by Scopus.
URL	https://service.elsevier.com/app/answers/detail/a_id/14884/c/10547/supporthub/scopus/related/1/
Type of service	Journal indicators, impact factors
Disciplines	Interdisciplinary
Presentation	SNIP measures contextual citation impact by weighting citations based on the total number of citations in a subject field. This unique perspective enables direct comparison of sources in different subject fields. SNIP helps authors to identify which journals are performing best within their subject field, helping them decide where to publish.
Types of resources	Journals
Date created	2012
Publication coverage dates	From 2012 to present Year N-3 (articles published in the previous 3 years
Geographical coverage	International
Classification
Selection criteria / Methodology	It is a ratio, with a numerator and a denominator. SNIP's numerator is a journal's impact per publication (IPP). This is simply the average number of citations received in a particular year by papers published in the journal during the three preceding years.
Number of currently indexed resources	25,300 journal titles
Annual growth	750 titles
Updating frequency	Annually

Publisher	Powered by Scopus
URL	https://journalmetrics.scopus.com/index.php/Faqs
Type of service	Journal indicators, impact factors
Disciplines	Interdisciplinary
Presentation	Citescore is a new standard developed and powered by Scopus (Elsevier) that gives a comprehensive, transparent and current view of a journal’s impact. CiteScore metrics are part of the Scopus basket of journal metrics that includes SNIP, SJR, citation- and document- counts and percentage cited. The integration of these metrics into Scopus provides insights into the citation impact of scholarly journals referenced in Scopus.
Types of resources	Journals
Date created	2016
Publication coverage dates	From 2011 to present Year N-3 (articles published in the previous three years)
Geographical coverage	International
Classification
Selection criteria / Methodology	CiteScore is the number of citations received by a journal in one year to documents published in the three previous years, divided by the number of documents indexed in Scopus published in those same three years.
Number of currently indexed resources	25,300 journal titles
Annual growth	750 titles
Updating frequency	Annually (monthly for Citescore Tracker)

Publisher	Latindex is a cooperative information system about scientific and technical journals published in Latin America, the Caribbean, Spain and Portugal. Latindex was created by the National Autonomous University of Mexico (UNAM) in 1997.
URL	http://www.latindex.org/latindex/inicio
Type of service	Registries
Disciplines	Interdisciplinary
Presentation	Catálogo references and describes journals that meet a set of editorial quality criteria established by Latindex. Catálogo is a subset of another bibliographic product of Latindex, Directorio, which references all scholarly journals published in Ibero-American countries and the Carribean. Catálogo and Directorio are published by Latindex.
Types of resources	Journals
Date created	2002
Publication coverage dates	From 1853 to present
Geographical coverage	Latin America, the Caribbean, Spain and Portugal (26 countries)
Classification	UDC (Universal Decimal Classification)
Selection criteria / Methodology	There are 36 characteristics: http://www.latindex.org/latindex/editElectronicas There are 36 editorial features. A journal must comply with the eight mandatory characteristics and at least 17 of the remaining characteristics, for a minimum of 25 fulfilled. If a publication fails to meet some of the basic characteristics, it does not enter Catálogo, even if the total sum of criteria met exceeds 25. Journals may be re-qualified, either at the request of the publisher or for consideration of the respective Latindex national centre, in accordance with the policies established by each centre.
Number of currently indexed resources	9,300 journals titles
Annual growth	~ 400 titles
Updating frequency	Daily

Publisher	DOAJ
URL	https://doaj.org
Type of service	Registries
Disciplines	Interdisciplinary
Presentation	DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals. DOAJ is independent. All funding is via donations from sponsors and members. The Directory aims to increase the visibility and ease of use of open access academic journals—regardless of size and country of origin—thereby promoting their visibility, usage and impact.
Types of resources	Journals
Date created	2003
Publication coverage dates
Geographical coverage	International
Classification	Library of Congress Subject Headings (LCSH)
Selection criteria / Methodology	The Directory aims to be comprehensive and covers all open access academic journals that use an appropriate quality control system See "Publishing best practice and basic standards for inclusion" and What is the DOAJ Seal of Approval for Open Access Journals (the DOAJ Seal)?
Number of currently indexed resources	11,700 journals titles
Annual growth	~ 2,000 titles
Updating frequency	Daily

Publisher	U.S. National Institutes of Health's National Library of Medicine
URL	http://www.ncbi.nlm.nih.gov/pmc
Type of service	Registries
Disciplines	Life sciences with a focus on biomedicine
Presentation	To advance science and improve human health, NIH makes the peer-reviewed articles it funds publicly available on PubMed Central. PMC is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine. As a digital counterpart to the NLM extensive print journal collection, it is a repository for journal literature. Some PMC journals are also MEDLINE journals.
Types of resources	Journal citations
Date created	2000
Publication coverage dates
Geographical coverage	International
Classification	Medical Subject Headings (MeSH®), NLM controlled vocabulary
Selection criteria / Methodology	Publishers and authors must comply with the NIH Public Access Policy and the PMC scope and NLM scientific quality standard. PubMed citations come from 1) MEDLINE indexed journals, 2) journals/manuscripts deposited in PMC, and 3) NCBI Bookshelf.
Number of currently indexed resources	2 million citations (PMC OA subset)
Annual growth
Updating frequency	Daily

Publisher	EDINA, University of Edinburgh
URL	http://thekeepers.org
Type of service	Registries
Disciplines	Interdisciplinary
Presentation	The Keepers Registry is a service to provide easily accessible information about inclusion of journals in archiving services. This information is cross-checked against the ISSN Portal, which provides a central spine for the Keepers Registry. The Keepers Registry main purposes are to enable librarians and policy makers to find out which e-journals are preserved, by which agency and with what terms of access. It can also be used to highlight the e-journals still "at risk of loss".
Types of resources	E-serials, mainly scholarly and cultural journals in electronic form
Date created	2011
Publication coverage dates
Geographical coverage	International
Classification
Selection criteria / Methodology	This is a registry for organizations that hold e-serial content with intent to archive for the long term. It is also a showcase for the Keepers of digital content that libraries and publishers should contact to ensure preservation of e-journal content. Each of the registered Keepers supplies information about the extent of volume and issue content that it has ingested for each serial title.
Number of currently indexed resources	38,600 journal titles
Annual growth
Updating frequency	Monthly. The date of last update is reported for each archiving agency.