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Please note that some of the hits on your work may be from search engines, which typically inflate the figures for you work research in its first few weeks in the Repository. In our experience, the 'interference' from search engine hits becomes increasingly insignificant over time.
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SHERPA - Clearing house for publisher copyright policies (Southampton University)
Publishers allowing use of their PDFs in repositories (Source: S SHERPA)
OAI - Open Archives Initiative, including detailed information on the OAI-PMH protocol