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Article metrics provide readers and authors with an indication of how often a specific article has been accessed month by month. It counts three formats - abstract/extract, full text and pdf. The page is updated each day.
| Month | Abstract | Full | |
|---|---|---|---|
| May 2013 | 6 | 1081 | 367 |
| April 2013 | 2 | 394 | 63 |
| March 2013 | 0 | 389 | 43 |
| February 2013 | 0 | 368 | 32 |
| January 2013 | 0 | 286 | 30 |
| December 2012 | 0 | 360 | 48 |
| November 2012 | 2 | 608 | 142 |
| October 2012 | 1 | 675 | 106 |
| September 2012 | 13 | 367 | 81 |
| August 2012 | 40 | 311 | 68 |
| July 2012 | 67 | 431 | 63 |
| June 2012 | 46 | 396 | 92 |
| May 2012 | 25 | 532 | 163 |
| April 2012 | 2 | 455 | 113 |
| March 2012 | 0 | 430 | 99 |
| February 2012 | 0 | 493 | 97 |
| January 2012 | 0 | 542 | 87 |
| December 2011 | 0 | 326 | 67 |
| November 2011 | 38 | 320 | 123 |
| October 2011 | 156 | 365 | 240 |
| September 2011 | 154 | 300 | 164 |
| August 2011 | 89 | 193 | 110 |
| July 2011 | 85 | 178 | 97 |
| June 2011 | 110 | 245 | 139 |
| May 2011 | 110 | 245 | 107 |
| April 2011 | 106 | 243 | 99 |
| March 2011 | 138 | 362 | 134 |
| February 2011 | 116 | 323 | 156 |
| January 2011 | 123 | 311 | 141 |
| December 2010 | 153 | 336 | 177 |
| November 2010 | 169 | 353 | 268 |
| October 2010 | 109 | 296 | 256 |
| September 2010 | 138 | 354 | 180 |
| August 2010 | 123 | 292 | 160 |
| July 2010 | 107 | 311 | 158 |
| June 2010 | 107 | 371 | 149 |
| May 2010 | 131 | 476 | 208 |
| April 2010 | 150 | 449 | 188 |
| March 2010 | 180 | 583 | 319 |
| February 2010 | 353 | 986 | 549 |
| January 2010 | 1355 | 1602 | 1050 |
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