Institutional repositories (IRs) are web-based archives of scholarly materials, allowing institutions to organize and provide access to research papers, theses, dissertations, and digital assets.
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π₯ Arxiv.org e-Print Archive
π₯ Social Science Research Network
π₯ Smithsonian/NASA Astrophysics Data System
π₯ Europe PubMed Central
π₯ Research Papers in Economics
π₯ CiteSeerX
π₯ HAL Institute National de Recherche en Informatique et en Automatique Archive Ouverte
π₯ University of California eScholarship Repository
π₯ CERN Document Server
π₯ Virginia Tech University Digital Library and Archives