CrossRef Indicators
Updated June 6, 2012
Total no. participating publishers & societies 3923
% of non-profit publishers 57%
Total no. participating libraries 1,874
No. journals covered 27,901
No. DOIs registered to date 54,373,398
No. DOIs deposited in previous month 238,725
No. DOIs retrieved (matched references) in previous month 32,365,026
DOI resolutions (end-user clicks) in previous month n/a