Re: STM Publisher Briefing on Institution Repository Deposit Mandates

[Phil Davis <pmd8@cornell.edu>]

Regarding Joe Esposito's question about whether digital archives 
can siphon usage from the publisher, we reported on such a find 
with 4 math journals in which some articles were deposited in the 
arXiv.

see:

Does the arXiv lead to higher citations and reduced publisher 
downloads for mathematics articles? Philip M. Davis, Michael J. 
Fromerth; Scientometrics Vol. 71, No. 2. p.203-215 (May, 2007)

and to illustrate "the Google effect", here is a link to a free 
copy of the final manuscript: 
http://arxiv.org/ftp/cs/papers/0603/0603056.pdf

--Phil Davis


Joseph J. Esposito asked:
> Someone speculated to me that the availability of articles in IRs
> is resulting in readers going to the IR version instead of the
> subscription version, even when the reader has access to the
> subscribed version (the cost of which is invisible to the
> end-user). This was characterized to me as "a Google effect,"
> that is, someone does a search on Google and clicks on the IR
> link rather than going to the library's subscription.