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  • × author_ss:"Oppenheim, C."
  1. Oppenheim, C.: ¬The implications of copyright legislation for electronic access to journal collections (1994) 0.01 
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    Source
    Journal of document and text management. 2(1994) no.1, S.10-22
  2. Oppenheim, C.: ¬An agenda for action to achieve the information society in the UK (1996) 0.01 
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    Source
    Journal of information science. 22(1996) no.6, S.407-421
  3. Norris, M.; Oppenheim, C.; Rowland, F.: ¬The citation advantage of open-access articles (2008) 0.01 
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    Abstract
    Four subjects - ecology, applied mathematics, sociology, and economics - were selected to assess whether there is a citation advantage between journal articles that have an open-access (OA) version on the Internet compared to those articles that are exclusively toll access (TA). Citations were counted using the Web of Science, and the OA status of articles was determined by searching OAIster, OpenDOAR, Google, and Google Scholar. Of a sample of 4,633 articles examined, 2,280 (49%) were OA and had a mean citation count of 9.04 whereas the mean for TA articles was 5.76. There appears to be a clear citation advantage for those articles that are OA as opposed to those that are TA. This advantage, however, varies between disciplines, with sociology having the highest citation advantage, but the lowest number of OA articles, from the sample taken, and ecology having the highest individual citation count for OA articles, but the smallest citation advantage. Tests of correlation or association between OA status and a number of variables were generally found to weak or inconsistent. The cause of this citation advantage has not been determined.
  4. Oppenheim, C.: Intellectual property : legal and other issues (1997) 0.01 
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    Source
    Information studies. 3(1997) no.1, S.5-22
  5. Oppenheim, C.: Electronic scholarly publishing and open access (2009) 0.01 
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    Date
    8. 7.2010 19:22:45
  6. Norris, M.; Oppenheim, C.: ¬The h-index : a broad review of a new bibliometric indicator (2010) 0.01 
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    Date
    8. 1.2011 19:22:13

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