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http://www.theses.fr/ |
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https://www.springeropen.com/all-subjects |
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https://journals.openedition.org/ |
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http://irevues.inist.fr/ |
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https://www.openedition.org/ |
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https://link.springer.com/search/page/3?facet-content-type=%22Book%22&package=openaccess |
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https://www.jstor.org/ |
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https://international.scholarvox.com/ |
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https://www.osapublishing.org/about.cfm |