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 | 2 | 0 | 0 |
| April 2013 | 2 | 2 | 1 |
| March 2013 | 1 | 5 | 2 |
| February 2013 | 3 | 0 | 0 |
| January 2013 | 6 | 1 | 0 |
| December 2012 | 3 | 4 | 1 |
| November 2012 | 15 | 3 | 1 |
| October 2012 | 6 | 3 | 0 |
| September 2012 | 6 | 2 | 1 |
| August 2012 | 22 | 3 | 0 |
| July 2012 | 10 | 2 | 1 |
| June 2012 | 18 | 0 | 0 |
| May 2012 | 9 | 0 | 0 |
| April 2012 | 13 | 4 | 1 |
| March 2012 | 29 | 5 | 0 |
| February 2012 | 41 | 13 | 2 |
| January 2012 | 27 | 32 | 2 |
| December 2011 | 0 | 45 | 6 |
| November 2011 | 0 | 16 | 4 |
| October 2011 | 5 | 48 | 8 |
| September 2011 | 4 | 38 | 6 |
| August 2011 | 5 | 27 | 4 |
| July 2011 | 40 | 14 | 6 |
| June 2011 | 37 | 19 | 5 |
| May 2011 | 35 | 10 | 5 |
| April 2011 | 43 | 7 | 5 |
| March 2011 | 132 | 15 | 4 |
| February 2011 | 97 | 25 | 3 |
| January 2011 | 29 | 23 | 5 |
| December 2010 | 35 | 8 | 2 |
| November 2010 | 48 | 31 | 5 |
| October 2010 | 70 | 13 | 7 |
| September 2010 | 22 | 6 | 4 |
| August 2010 | 12 | 13 | 6 |
| July 2010 | 15 | 19 | 5 |
| June 2010 | 14 | 4 | 5 |
| May 2010 | 14 | 10 | 3 |
| April 2010 | 17 | 7 | 5 |
| March 2010 | 10 | 8 | 3 |
| February 2010 | 7 | 4 | 4 |
| January 2010 | 5 | 3 | 6 |
| December 2009 | 7 | 1 | 5 |
| November 2009 | 9 | 5 | 5 |
| October 2009 | 3 | 2 | 2 |
| September 2009 | 17 | 2 | 1 |
| August 2009 | 11 | 5 | 3 |
| July 2009 | 8 | 6 | 4 |
| June 2009 | 15 | 4 | 9 |
| May 2009 | 11 | 6 | 3 |
| April 2009 | 10 | 9 | 9 |
| March 2009 | 12 | 12 | 11 |
| February 2009 | 15 | 9 | 5 |
| January 2009 | 21 | 10 | 13 |
| December 2008 | 11 | 33 | 20 |
| November 2008 | 6 | 32 | 31 |
| October 2008 | 9 | 41 | 29 |
| September 2008 | 11 | 26 | 23 |
| August 2008 | 6 | 32 | 18 |
| July 2008 | 6 | 48 | 17 |
| June 2008 | 3 | 48 | 15 |
| May 2008 | 2 | 42 | 24 |
| April 2008 | 2 | 39 | 27 |
| March 2008 | 2 | 37 | 38 |
| February 2008 | 9 | 34 | 31 |
| January 2008 | 6 | 25 | 38 |
| December 2007 | 3 | 35 | 29 |
| November 2007 | 7 | 57 | 27 |
| October 2007 | 6 | 48 | 31 |
| September 2007 | 14 | 56 | 33 |
| August 2007 | 8 | 37 | 25 |
| July 2007 | 7 | 24 | 19 |
| June 2007 | 3 | 38 | 22 |
| May 2007 | 2 | 65 | 29 |
| April 2007 | 6 | 109 | 23 |
| March 2007 | 5 | 63 | 29 |
| February 2007 | 3 | 81 | 33 |
| January 2007 | 11 | 71 | 28 |
| December 2006 | 6 | 33 | 27 |
| November 2006 | 8 | 72 | 43 |
| October 2006 | 7 | 96 | 39 |
| September 2006 | 5 | 82 | 66 |
| August 2006 | 9 | 55 | 23 |
| July 2006 | 8 | 33 | 26 |
| June 2006 | 4 | 42 | 19 |
| May 2006 | 12 | 93 | 64 |
| April 2006 | 10 | 76 | 33 |
| March 2006 | 4 | 88 | 49 |
| February 2006 | 13 | 65 | 38 |
| January 2006 | 14 | 77 | 40 |
| December 2005 | 16 | 112 | 32 |
| November 2005 | 11 | 84 | 50 |
| October 2005 | 16 | 84 | 49 |
| September 2005 | 6 | 82 | 46 |
| August 2005 | 13 | 90 | 47 |
| July 2005 | 6 | 83 | 40 |
| June 2005 | 10 | 75 | 48 |
| May 2005 | 12 | 102 | 102 |
| April 2005 | 18 | 94 | 64 |
| March 2005 | 24 | 100 | 70 |
| February 2005 | 17 | 168 | 47 |
| January 2005 | 21 | 157 | 46 |
| December 2004 | 39 | 120 | 63 |
| November 2004 | 29 | 207 | 82 |
| October 2004 | 15 | 231 | 101 |
| September 2004 | 5 | 239 | 83 |
| August 2004 | 3 | 249 | 88 |
| July 2004 | 5 | 252 | 99 |
| June 2004 | 5 | 283 | 99 |
| May 2004 | 0 | 244 | 97 |
| April 2004 | 2 | 201 | 126 |
| March 2004 | 2 | 219 | 156 |
| February 2004 | 0 | 223 | 159 |
| January 2004 | 36 | 333 | 200 |
| December 2003 | 2 | 338 | 230 |
| November 2003 | 10 | 522 | 281 |
| October 2003 | 0 | 566 | 411 |
| September 2003 | 1 | 634 | 421 |
| August 2003 | 1 | 5795 | 2382 |
| July 2003 | 0 | 288 | 212 |








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