CrossRef Indicators
The latest stats on CrossRef activity have been posted at
http://www.crossref.org/01company/crossref_indicators.html
CROSSREF INDICATORS (December 01, 2008)
Total no. participating publishers & societies 2,670
% of non-profit publishers 64%
Total no. participating libraries 1,439
No. journals covered 21,569
No. DOIs registered to date 34,332,498
No. DOIs deposited in previous month 476,036
No. DOIs retrieved (matched references) in previous month 11,644,275
DOI resolutions (end-user clicks) in previous month n/a