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Walters, W.H.; Linvill, A.C.: Bibliographic index coverage of open-access journals in six subject areas (2011)
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Walters, W.H.: Google Scholar coverage of a multidisciplinary field (2007)
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Hsieh, J.-L.: Author publication preferences and journal competition (2017)
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Stebelman, S.: Analysis of retrieval performance in four cross-disciplinary databases : Article1st, Faxon Finder, UnCover, and a locally mounted database (1994)
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Hood, W.W.; Wilson, C.S.: ¬The scatter of documents over databases in different subject domains : how many databases are needed? (2001)
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