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researchgate.net

Access 160+ million publication pages and connect with 25+ million researchers. Join for free and gain visibility by uploading your research.

pnas.org

proceedings of the national academy of sciences (pnas), a peer reviewed journal of the national academy of sciences (nas) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.

scirp.org

scientific research publishing is an academic publisher with more than 200 open access journal in the areas of science, technology and medicine. it also publishes academic books and conference proceedings.

tandfonline.com

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frontiersin.org

Learn more about how Frontiers' open access agreements can benefit your institution by reading our frequently asked questions.

intechopen.com

intechopen is a leading global publisher of journals and books within the fields of science, technology and medicine. we are the preferred choice of over 60,000 authors worldwide.

taylorfrancis.com

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sci-hub.se

sci-hub website. get free access to academic journals. download research papers for free from sciencedirect, ieee, wiley, springer, nature and others

semanticscholar.org

Semantic Scholar uses groundbreaking AI and engineering to understand the semantics of scientific literature to help Scholars discover relevant research.