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Oppenheim, C.; Stuart, D.: Is there a correlation between investment in an academic library and a higher education institution's ratings in the Research Assessment Exercise? (2004)
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Johnson, B.; Oppenheim, C.: How socially connected are citers to those that they cite? (2007)
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Oppenheim, C.: Using the h-Index to rank influential British researchers in information science and librarianship (2007)
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