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Abstracting & Indexing for Journal Authors

Abstracting and Indexing (A&I) services enable scholars to search and find journal articles and ebooks based on metadata tags and abstracts. Researchers rely on these services to quickly and conveniently find publications on relevant topics.

What is Abstracting & Indexing?

A&I unlock the content of academic journals and ebooks using metadata and abstracts, thereby improving the ease of use of academic literature. The metadata used in abstracting & indexing services includes the title, author, publication date, journal title, volume and issue number, page numbers, subject area, keywords, DOI, and other key elements. Inputting search criteria brings up the metadata and abstracts of relevant articles, chapters, and books, along with links to the full-text versions.

extra information

At De Gruyter, our Abstracting & Indexing team is dedicated to achieving maximum exposure of your article in all of the relevant services, and to working with you to constantly improve your article’s rankings.

Our services include:

Advising on how to increase citations

Advising on how to increase reference linking

Collecting content usage statistics

What Abstracting & Indexing services are there?

De Gruyter works closely with all A&I service providers and is continually expanding its portfolio of partners. There are around 200 corporations and institutions offering A&I services with around 400 individual databases. These include:

Academic services covering all subject areas:

Corporations with dozens of often specialized databases:

Services in specific subject areas:

Services dedicated exclusively to open access publications:

Other Collaboration Tools

Our website also uses a range of collaboration tools, all of which can help bolster citations:

  • Altmetrics Explorer: Delivers reports on how our articles are shared, especially on social media

  • FundRef: Identifies the funding body of the research

  • ORCID: Unique identifier for scientists

  • Portico: Perpetual archiving of all journal content on

The key component of our service is to provide each journal with a sophisticated electronic content hosting and distribution platform. The electronic version of the journal is provided with a sleek, professional and user-friendly interface thanks to the platform’s numerous functionalities, such as:

  • Automatic creation of active reference links

  • Automatic delivery of abstracts to abstracting databases

  • Easy integration with library systems and user authentication

  • The option to publish articles online as they are finalised (rather than having to wait for issue compilation)


On the journal product pages of our website, you can find information on the following bibliometric indicators:

  • Journal Impact Factor (JIF): The JIF, calculated for the journals indexed in the Web of Science, indicates how often the articles and reviews published in a journal in the two previous years were cited on average during the year. The values are published by Clarivate in the Journal Citation Reports in the middle of the following year. It should be noted that due to the different reception and citation behavior in different subject areas (e.g., in humanities and life sciences), the JIF values are not comparable across disciplines.
  • 5-year Journal Impact Factor: The average frequency with which articles and reviews published in a journal in the five preceding years were cited within one year.
  • Journal Citation Indicator (JCI): The JCI, which is also determined by Clarivate for the Journal Citation Reports, is the average category (subject area) normalized impact factor of the articles and reviews published in a journal in the last three years. The average JCI in a category is 1. Journals with a JCI of 1.5 have a 50% higher impact than the average in this category.
  • CiteScore (CS) is an indicator assigned to journals in the Scopus database (Elsevier). It provides information on how often the articles of a journal published within four years were cited in the same four years. The CiteScore is updated around the middle of the year following the four-year period under consideration. As with the Journal Impact Factor, the values for journals in different subject areas are on average at different levels.
  • SCImago Journal Rank (SJR): This value is calculated annually by Scimago based on Scopus data. It considers not only the number of citations of articles in a journal, but also the importance of the journals in which citations are made. The algorithm used to calculate the SJR values is based on Google PageRank.

Quartiles (Q1-Q4): Journals that receive a Journal Impact Factor, Journal Citation Indicator, CiteScore or SCImago Journal Rank are ranked within their categories (subject areas) according to the value in question (JIF, JCI, CS, SJR) and assigned to so-called quartiles. Q1 means that the journal belongs to the best quarter of all journals in the respective category. Q4 means that the journal belongs to the last quarter in the category. Q2 and Q3 accordingly stand for the second and third quarters. If a journal is assigned to several categories, only the best quartile achieved in one of the categories is indicated on our product pages.

  • Source Normalized Impact per Paper (SNIP) is also based on Scopus data and is determined by the Centre for Science and Technology Studies (CWTS) at Leiden University. SNIP evaluates the relationship between the average number of citations of articles in a journal and the citation potential in the subject area concerned. This is intended to allow direct comparison of journals from different subject areas.
  • Mathematical Citation Quotient (MCQ): The American Mathematical Society calculates this value for all journals in MathSciNet. It indicates the average frequency with which articles published in a journal in the five preceding years were cited in MathSciNet within one year.
  • Index Copernicus Value (ICV): Awarded by Index Copernicus International in the ICI Journals Master List, the ICV is an annually updated measure of a journal's development potential in terms of impact.
  • European Reference Index for the Humanities and Social Sciences (ERIH PLUS): The humanities and social sciences journals in this index meet strict formal and qualitative criteria.
  • Agenzia Nazionale di Valutazione del Sistema Universitario e della Ricerca (ANVUR): Classification of “Scientific” and “Class A” journals carried out by the Italian National Agency for the Evaluation of the University and Research Systems.
  • Polish Ministry of Science and Higher Education Points: Based on the list of journals issued by the Polish Ministry of Science and Higher Education in December 2021. The range of the points is from 20 to 200.

Learn More About A&I Services

If you’d like to know more about how A&I services function at De Gruyter, contact our team for more information.

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