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Summary of third-party works using and/or citing HAGR
| Year | 2004a | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012b |
|---|---|---|---|---|---|---|---|---|---|
| HAGR citations | 1 | 6 | 7 | 11 | 25 | 33 | 44 | 46 | 23 |
| User statisticsc | 3 | 6.6 | 10.6 | 11.9 | 15.7 | 16.1 | 14.8 | 16.5 | 15.1 |
aStarting in mid-2004.
bBy mid-2012.
cUser statistics include the number of unique visitors per month (in thousands) of all resources combined.
