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Citation indexing and Re: Ejournal use data, was: Elsevier andcancellations



Didn't Garfield pioneer this area by looking at citation indexing?  
Doesn't Science Citation Indexing still put out numbers on what journals
and what articles have the most impact in a field?  Are these not better,
more direct, measures than how often a journal is accessed?  It would
appear that accessing may be related to the impact of a journal or
article, but what we would like to know for understanding progress and
development in a field is impact, or some such measure. Aren't citation
measures available to librarians for free from SCI?  And SSCi? dh