Conference Proceedings Citation Index - Trial access April 29 - August 30, 2010

Trial access - prolonged to August 30, 2010

Conference Proceedings Citation Index  - Science (CPCI-S)  1990-
Conference Proceedings Citation Index - Social Sciences & Humanities (CPCI-SSH)   1990 -
The databases are included in Web of  Science, see Current Limits the bottom of the search page.

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See also Web of Science with Conference Proceedings Tutorial