14 March 2006 05:00
Search Engine Coverage of the OAI-PMH Corpus. - Frank McCown, Xiaoming Liu, Michael L. Nelson, and Mohammed Zubair. - IEEE Internet Computing, March/April 2006, Vol. 10, No. 2, pp. 66-73.
Of 10M from 776 OAI-PMH repositories, Yahoo! indexed (65%), followed by Google (44%), and MSN (7%). 21% of the resources were not indexed by any of the three search engines.
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