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 | 3 | 50 | 8 |
| April 2013 | 1 | 41 | 2 |
| March 2013 | 0 | 31 | 0 |
| February 2013 | 0 | 23 | 5 |
| January 2013 | 0 | 15 | 0 |
| December 2012 | 0 | 34 | 4 |
| November 2012 | 1 | 38 | 1 |
| October 2012 | 7 | 29 | 3 |
| September 2012 | 1 | 38 | 9 |
| August 2012 | 4 | 12 | 5 |
| July 2012 | 1 | 33 | 3 |
| June 2012 | 7 | 23 | 5 |
| May 2012 | 70 | 25 | 12 |
| April 2012 | 0 | 45 | 14 |
| March 2012 | 0 | 36 | 10 |
| February 2012 | 0 | 39 | 7 |
| January 2012 | 0 | 40 | 7 |
| December 2011 | 0 | 37 | 9 |
| November 2011 | 7 | 17 | 8 |
| October 2011 | 21 | 8 | 26 |
| September 2011 | 10 | 10 | 16 |
| August 2011 | 8 | 3 | 26 |
| July 2011 | 9 | 9 | 11 |
| June 2011 | 19 | 40 | 11 |
| May 2011 | 28 | 29 | 22 |
| April 2011 | 14 | 16 | 17 |
| March 2011 | 23 | 13 | 24 |
| February 2011 | 24 | 20 | 32 |
| January 2011 | 19 | 11 | 16 |
| December 2010 | 17 | 10 | 17 |
| November 2010 | 25 | 11 | 13 |
| October 2010 | 23 | 20 | 27 |
| September 2010 | 26 | 9 | 13 |
| August 2010 | 23 | 20 | 19 |
| July 2010 | 20 | 27 | 6 |
| June 2010 | 23 | 17 | 17 |
| May 2010 | 59 | 22 | 44 |
| April 2010 | 52 | 12 | 36 |
| March 2010 | 27 | 29 | 28 |
| February 2010 | 24 | 40 | 25 |
| January 2010 | 38 | 26 | 23 |
| December 2009 | 13 | 15 | 13 |
| November 2009 | 29 | 17 | 12 |
| October 2009 | 25 | 15 | 10 |
| September 2009 | 13 | 22 | 13 |
| August 2009 | 22 | 15 | 11 |
| July 2009 | 26 | 16 | 3 |
| June 2009 | 14 | 12 | 5 |
| May 2009 | 22 | 13 | 11 |
| April 2009 | 20 | 18 | 16 |
| March 2009 | 10 | 22 | 11 |
| February 2009 | 15 | 83 | 48 |
| January 2009 | 12 | 25 | 18 |
| December 2008 | 10 | 18 | 15 |
| November 2008 | 14 | 16 | 14 |
| October 2008 | 17 | 14 | 11 |
| September 2008 | 7 | 33 | 10 |
| August 2008 | 5 | 20 | 14 |
| July 2008 | 11 | 19 | 9 |
| June 2008 | 19 | 38 | 10 |
| May 2008 | 14 | 21 | 35 |
| April 2008 | 8 | 29 | 39 |
| March 2008 | 5 | 34 | 21 |
| February 2008 | 6 | 64 | 44 |
| January 2008 | 17 | 30 | 28 |
| December 2007 | 18 | 21 | 17 |
| November 2007 | 18 | 50 | 22 |
| October 2007 | 19 | 37 | 17 |
| September 2007 | 16 | 20 | 15 |
| August 2007 | 7 | 23 | 8 |
| July 2007 | 7 | 22 | 10 |
| June 2007 | 11 | 30 | 15 |
| May 2007 | 12 | 35 | 34 |
| April 2007 | 6 | 35 | 30 |
| March 2007 | 20 | 45 | 30 |
| February 2007 | 8 | 76 | 31 |
| January 2007 | 7 | 34 | 32 |
| December 2006 | 10 | 35 | 16 |
| November 2006 | 13 | 62 | 24 |
| October 2006 | 11 | 41 | 30 |
| September 2006 | 8 | 16 | 17 |
| August 2006 | 9 | 29 | 11 |
| July 2006 | 5 | 27 | 6 |
| June 2006 | 23 | 36 | 11 |
| May 2006 | 35 | 63 | 40 |
| April 2006 | 20 | 50 | 42 |
| March 2006 | 13 | 76 | 42 |
| February 2006 | 31 | 86 | 57 |
| January 2006 | 19 | 44 | 24 |
| December 2005 | 16 | 33 | 17 |
| November 2005 | 19 | 54 | 30 |
| October 2005 | 14 | 76 | 14 |
| September 2005 | 13 | 49 | 12 |
| August 2005 | 12 | 60 | 18 |
| July 2005 | 6 | 41 | 17 |
| June 2005 | 12 | 28 | 15 |
| May 2005 | 14 | 64 | 24 |
| April 2005 | 17 | 55 | 25 |
| March 2005 | 30 | 102 | 18 |
| February 2005 | 41 | 115 | 23 |
| January 2005 | 47 | 111 | 25 |
| December 2004 | 71 | 106 | 19 |
| November 2004 | 41 | 105 | 36 |
| October 2004 | 24 | 88 | 24 |
| September 2004 | 38 | 93 | 27 |
| August 2004 | 79 | 109 | 37 |
| July 2004 | 49 | 108 | 13 |
| June 2004 | 47 | 118 | 11 |
| May 2004 | 39 | 73 | 33 |
| April 2004 | 31 | 57 | 25 |
| March 2004 | 46 | 85 | 32 |
| February 2004 | 23 | 66 | 46 |
| January 2004 | 48 | 88 | 22 |
| December 2003 | 18 | 61 | 23 |
| November 2003 | 34 | 69 | 26 |
| October 2003 | 18 | 68 | 35 |
| September 2003 | 33 | 46 | 13 |
| August 2003 | 56 | 58 | 13 |
| July 2003 | 26 | 52 | 17 |








Social bookmarking