CAS Source Index (CASSI): A division of American Chemical Society
J-Gate (Largest e Journal Gateway)
Google Scholar
Advanced Science Index (ASI)
ResearchBib (Academic Resource Index)
Directory of Open Access scholarly Resources (ROAD)
Directory of Research Journals Indexing (DRJI)
EuroPub: Academic and Scholarly Research Publication Center
International Committee of Medical Journal Editors (ICMJE)
OCLC WorldCat
Publons (Clarivate Web of Science Group)
Index Copernicus International (ICI) World of Journals
Publication Integrity & Ethics (PIE)
Cite Factor (Academic Scientitfic Journals)
Cosmos Foundation
ORCID (Open Researcher and Contributor ID)
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