• Google Scholar (H-index tracking)

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• EBSCO (including EBSCOhost and SocINDEX)

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• EBSCO - Central & Eastern European Academic Source

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• Turk Egitim Indeksi

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• ISSN International Center

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• Electronic Journals Library, University Library of Duisburg-Essen (EZB)

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• BASE (Bielefeld Academic Search Engine)

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• Zenodo

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• University of Glasgow

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• Dimensions.ai

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• Penn Libraries - University of Pensilvania

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• Scilit (MDPI database)

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• Publons (Web of Science researcher profile integration)

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• University of Amsterdam

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• ECONBIZ – Find Economic Literature

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• ERIH PLUS (European Reference Index for the Humanities and Social Sciences)

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• The University of British Columbia University

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• Brown University Library

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• SciUp – Scientific Journals Index

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• Izdanii.ru

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• Türk Eğitim İndeksi (Turkish Education Index)

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• MIT Libraries

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• Berkeley Library - University of California

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• Fachinformationsdienst Mathematik (FID Math)

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• PhilArchive (Philosophy Preprint Repository)

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• WorldCat (OCLC Global Catalog)

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• The University of Texas at Austin - University of Texas Libraries

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• KING`s Colledge London

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• Goucher College Library Catalog

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• PennState University

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• Georgetown University

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• Princeton University Library

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• Universidad de Lima

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• Rurtgers University Libraries

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• Duke University Libraries

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• FIND@HKUL

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• UNSW Sydney

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• Technical University of Denmark Library DTU FindIt

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• Ball State ONESEACRH Content

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• King Abdullah University of Science and Technology Thuwal, Kingdom of Saudi Arabia

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• UIC University Library

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• University of Toronto Library

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• UC Santa Barbara Library

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• OpenAlex

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• ZDB Catalogue (Zeitschriftendatenbank, ZDB Number: 3120374)

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• MIAR (Information Matrix for the Analysis of Journals)

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• Texas University Find Articles

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• FH Aachen University of Applied Sciences

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• AU Library Search

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• Research4Life – HINARI

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• DET KGL Bibliotek

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• MegaPaper

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• HAW Hamburg Library

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• ISTINA (Moscow State University Academic Information System)

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• SJSU King Library

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• ISSN ROAD (Directory of Open Access Scholarly Resources)

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• HOLLIS Harward Library

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• eLibrary.ru (Scientific Electronic Library of Russia)

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• LIVIVO (ZB MED – Information Centre for Life Sciences)

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• IdealOnline

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• Swisscovery (Swiss Library Network)

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• Crossref (DOI registration and citation linking)

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• Mendeley (Elsevier Research Network)

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• E_scite_ (Smart citation analysis platform)

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• Semantic Scholar

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• Asian Science Citation Index

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• Lens.org (Scholarly discovery and citation platform)

---

• MPRA – Munich Personal RePEc Archive

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• Elsevier SSRN (Social Science Research Network)

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• R Discovery

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• Access ON

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• Clasificación Integrada de Revistas Científicas (CIRC) 

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• Universitätsbibliothek Leipzig database

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• Daten‑Quadrat, German platform, catalogs COVID‑19 scientific journal articles

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• SciSpace

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• OpenaAir

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• Academia.edu

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• Archive.org