Article usage
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.
HW statistics
Monthly Stats
| Month | Abstract | Full | |
|---|---|---|---|
| May 2013 | 19 | 3 | 0 |
| April 2013 | 41 | 14 | 0 |
| March 2013 | 18 | 7 | 0 |
| February 2013 | 5 | 1 | 0 |
| January 2013 | 18 | 2 | 0 |
| December 2012 | 3 | 2 | 0 |
| November 2012 | 25 | 2 | 0 |
| October 2012 | 9 | 0 | 0 |
| September 2012 | 2 | 2 | 0 |
| August 2012 | 2 | 1 | 0 |
| July 2012 | 2 | 0 | 0 |
| June 2012 | 8 | 0 | 0 |
| May 2012 | 17 | 0 | 0 |
| April 2012 | 22 | 4 | 0 |
| March 2012 | 17 | 0 | 0 |
| February 2012 | 12 | 2 | 0 |
| January 2012 | 11 | 0 | 0 |
| December 2011 | 13 | 0 | 0 |
| November 2011 | 6 | 1 | 0 |
| October 2011 | 8 | 0 | 0 |
| September 2011 | 11 | 1 | 0 |
| August 2011 | 10 | 0 | 0 |
| July 2011 | 6 | 0 | 0 |
| June 2011 | 8 | 0 | 0 |
| May 2011 | 2 | 1 | 0 |
| April 2011 | 12 | 3 | 0 |
| March 2011 | 8 | 2 | 0 |
| February 2011 | 12 | 2 | 0 |
| January 2011 | 10 | 1 | 0 |
| December 2010 | 6 | 1 | 0 |
| November 2010 | 8 | 4 | 0 |
| October 2010 | 7 | 4 | 0 |
| September 2010 | 6 | 7 | 0 |
| August 2010 | 2 | 20 | 0 |
| July 2010 | 2 | 13 | 0 |
| June 2010 | 2 | 18 | 0 |
| May 2010 | 1 | 15 | 0 |
| April 2010 | 5 | 14 | 0 |
| March 2010 | 0 | 22 | 0 |
| February 2010 | 2 | 16 | 0 |
| January 2010 | 2 | 17 | 0 |
| December 2009 | 1 | 19 | 0 |
| November 2009 | 1 | 14 | 0 |
| October 2009 | 4 | 28 | 0 |
| September 2009 | 5 | 23 | 0 |
| August 2009 | 1 | 22 | 0 |
| July 2009 | 2 | 30 | 0 |
| June 2009 | 5 | 25 | 0 |
| May 2009 | 2 | 34 | 0 |
| April 2009 | 2 | 24 | 0 |
| March 2009 | 7 | 36 | 0 |
| February 2009 | 6 | 17 | 0 |
| January 2009 | 12 | 33 | 0 |
| December 2008 | 13 | 22 | 1 |
| November 2008 | 24 | 136 | 0 |
| October 2008 | 152 | 287 | 0 |
| September 2008 | 180 | 244 | 0 |








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