Visibility of deposits: harvesting, SEO

This page lists the main sites using HAL as a data source.

Search engines

  • Google Scholar: a Google service indexing only scholarly literature.
  • BASE (Bielefeld Academic Search Engine): search engines especially for academic web resources. BASE is operated by Bielefeld University Library
  • CORE :aggregate open access research outputs from repositories and journals worldwide and make them available to the public. CORE is managed by the Open University and JISC ( Joint Information Systems Committee).
  • ScanR: search engine for French research and innovation. Developed by the French Ministry of Higher education, Research and Innovation
  • Isidore: platform of search allowing the access to digital data of Humanities and Social Sciences. It relies on the principles of Web of data and provides access to data in free access (open access). Isidore is a realization of the great infrastructure of research Huma-Num.
  • DART-Europe: portal for open access research theses. DARTEurope is a partnership of research libraries and library consortia who are working together to improve global access to European research theses.. TEL is a partner and is harvested.
  • Semantic Scholar : search engine for research publications related to computer science and biomedicine, developed par the Allen Institute for Artificial Intelligence
  • Baidu Xueshu (百度学术) : chinese search engine similar to Google scholar, launched in 2014.

Databases, open repositories

  • OpenAIRE (Open Access Infrastructure for Research in Europe): technical infrastructure pulling together and interconnecting the large-scale collections of research outputs across Europe.

    • OpenAIRE harvests all HAL
    • metadata “European project” must be filled in the HAL deposit so as the publication to be displayed in the list of the publications of the project on the OpenAIRE repository
    • OpenAIRE compatibility : OpenAIRE 3.0 (OA, funding)
  • PubMed: most important bibliographic database for biomedical research, provided by the National Center for Biotechnology Information (NCBI) at the U.S. National Library of Medicine (NLM).

    • the HAL logo appears for the deposits with a PubMed ID (PMID) and a preprint/postprint version without embargo
    • extraction of the database once a month
    • to find all the HAL deposits with the PubMed research form:  add the filter loprovhalarchives[sb]
  • PubMed Central: open archive of scholarly articles for biomedical research, provided by the National Center for Biotechnology Information (NCBI) at the U.S. National Library of Medicine (NLM).

    • the transfer of deposits to Pubmed Central, managed by INSERM, is no longer available since september 2022
    • the request to find all the HAL deposits in the PubMed research form is HAL-INSERM
  • Europe PubMed Central: repository, providing access to worldwide life sciences articles, books, patents and clinical guidelines. It  includes resources from PubMed and PubMed Central (PMC). It is provided by EMBL-EBI (European Bioinformatics Institute)
    • deposits with a PubMed ID (PMID) and a preprint/postprint version without embargo
    • to find the HAL deposits in the research form of Europe PMC, select HAL open archive in the dropdown list of the External links
  • RePec (Research Papers in Economics): decentralized bibliographic database, collaborative effort of hundreds of volunteers in 96 countries to enhance the dissemination of research in Economics and related sciences.
    • all the deposits with the domains Quantitative finance, HSS/Economies and finances oo HSS/Business administration
    • metadata (records and fulltext deposits) are made available daily to RePec in ReDIF format.
    • deposits corresponding to RePec series (working papers series) are reported in specific directories
  • Software Heritage :collects publicly available software in source code form, with the history of their development, to ensure their preservation and dissemination. Software Heritage was founded by INRIA and benefits from numerous partnerships.
    • software deposits, regardless of the scientific field, are transferred for archiving to Software Heritage if they are under free license and without embargo, and at the request of the author (see Depositing software source code).
    • the metadata in HAL is updated with the SWH ID
    • the origin of the deposit is reported in Software Heritage


  • Episciences: overlay journal platform for management, hosting and dissemination of open access scholarly litterature. Articles are submitted to these journals by depositing them in an open archive.  Provided by CCSD.

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