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  2. List of academic databases and search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_academic_databases...

    the article about bibliographic databases for information about databases giving bibliographic information about finding books and journal articles. Note that "free" or "subscription" can refer both to the availability of the database or of the journal articles included. This has been indicated as precisely as possible in the lists below.

  3. List of open-access journals - Wikipedia

    en.wikipedia.org/wiki/List_of_open-access_journals

    It does not include delayed open access journals, hybrid open access journals, or related collections or indexing services. True open-access journals can be split into two categories: diamond or platinum open-access journals , which charge no additional publication, open access or article processing fees

  4. Directory of Open Access Journals - Wikipedia

    en.wikipedia.org/wiki/Directory_of_Open_Access...

    At the end of the process (December 2017), close to 5,000 journals, out of the 11,600 indexed in May 2016, had been removed from their database, in majority for failure to reapply. [4] [5] [6] Notwithstanding the substantial cleanup, the number of journals included in DOAJ has continued to grow, to reach 14,299 as of 3 March 2020. [7]

  5. PubMed Central - Wikipedia

    en.wikipedia.org/wiki/PubMed_Central

    PubMed Central (PMC) is a free digital repository that archives open access full-text scholarly articles that have been published in biomedical and life sciences journals. As one of the major research databases developed by the National Center for Biotechnology Information (NCBI), PubMed Central is more than a document repository.

  6. Tertiary source - Wikipedia

    en.wikipedia.org/wiki/Tertiary_source

    A tertiary source is an index or textual consolidation of already published primary and secondary sources [1] that does not provide additional interpretations or analysis of the sources. [2] [3] Some tertiary sources can be used as an aid to find key (seminal) sources, key terms, general common knowledge [4] and established mainstream science ...

  7. Lists of academic journals - Wikipedia

    en.wikipedia.org/wiki/Lists_of_academic_journals

    List of academic journals about specific authors; List of accounting journals; List of African studies journals; List of anarchist periodicals; List of anthropology journals; List of arachnology journals; List of astronomy journals; List of bioethics journals; List of bioinformatics journals; List of biology journals; List of botany journals ...

  8. List of preprint repositories - Wikipedia

    en.wikipedia.org/wiki/List_of_preprint_repositories

    Ultrasound research A free preprint service for the focused ultrasound research community <100 2018 Center for Open Science: Frenxiv: Multidisciplinary: French server for preprints. Closed. >100 2018–2022 Center for Open Science: Gates Open Research: Multidisciplinary

  9. Google Scholar - Wikipedia

    en.wikipedia.org/wiki/Google_Scholar

    Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. . Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other ...