D-Lib Magazine, June 2004, Volume 10 Number 6, ISSN 1082-9873
Comparing the Impact of Open Access (OA) vs. Non-OA Articles in the Same Journals
The way to test the impact advantage of Open Access (OA) is not to compare the citation impact factors of OA and non-OA journals but to compare the citation counts of individual OA and non-OA articles appearing in the same (non-OA) journals. Such ongoing comparisons are revealing dramatic citation advantages for OA
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