CrossRef Indicators
CROSSREF INDICATORS (March 30, 2009)
Total no. participating publishers & societies 2,745
% of non-profit publishers 64%
Total no. participating libraries 1,459
No. journals covered 19,987
No. DOIs registered to date 35,987,739
No. DOIs deposited in previous month 297,524
No. DOIs retrieved (matched references) in previous month 14,620,414
DOI resolutions (end-user clicks) in previous month 26,250,112
The latest stats on CrossRef activity have been posted at
http://www.crossref.org/01company/crossref_indicators.html