CrossRef Indicators
Updated February 09, 2009
Total no. participating publishers & societies 2,709
% of non-profit publishers 64%
Total no. participating libraries 1,456
No. journals covered 21,986
No. DOIs registered to date 35,278,082
No. DOIs deposited in previous month 387,853
No. DOIs retrieved (matched references) in previous month 14,121,925
DOI resolutions (end-user clicks) in previous month 24,329,474
The latest stats on CrossRef activity have been posted at
http://www.crossref.org/01company/crossref_indicators.html