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1. scholar.google.comGoogle Scholar

   scholar.google.com

   Google Scholar provides a simple way to broadly search for scholarly literature. Search across a wide variety of disciplines and sources: articles, theses, books, abstracts and court opinions.

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     Select Courts - Google Scholar

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   • ‪Juner Zhu‬

     ‪Northeastern University‬ - ‪‪Cited by 3,113‬‬ - ‪Applied...

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   • ‪Ronald C Kessler‬

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   • ‪Seyedali Mirjalili‬

     ‪Professor, Torrens University Australia, Obuda University,...

2. doaj.orgDirectory of Open Access Journals – DOAJ

   doaj.org

   • Αποθηκευμένο αντίγραφο

   DOAJ is a unique and extensive index of diverse open access journals from around the world, driven by a growing community, committed to ensuring quality content is freely available online for everyone.

3. www.ebsco.com › products › research-databasesFree Research Databases from EBSCO | Free Academic Databases

   www.ebsco.com › products › research-databases

   • Αποθηκευμένο αντίγραφο

   EBSCO offers free access to various databases covering topics such as race, environment, library science, education and history. Some databases include peer-reviewed articles, dissertations, essays and primary sources.

4. pubmed.ncbi.nlm.nih.govPubMed

   pubmed.ncbi.nlm.nih.gov

   PubMed® comprises more than 37 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full text content from PubMed Central and publisher web sites.

5. pmc.ncbi.nlm.nih.govPMC Home

   pmc.ncbi.nlm.nih.gov

   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 (NIH/NLM) About PMC. Discover a digital archive of scholarly articles, spanning centuries of scientific research. User Guide.

6. unpaywall.orgUnpaywall

   unpaywall.org

   An open database of 51,476,808 free scholarly articles. We harvest Open Access content from over 50,000 publishers and repositories, and make it easy to find, track, and use. Get the extension.

7. pubmed.ncbi.nlm.nih.gov › aboutAbout - PubMed

   pubmed.ncbi.nlm.nih.gov › about

   15 Αυγ 2023 · PubMed is a free resource supporting the search and retrieval of biomedical and life sciences literature with the aim of improving health–both globally and personally. The PubMed database contains more than 37 million citations and abstracts of biomedical literature.