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 | 15 | 68 | 18 |
| April 2013 | 3 | 36 | 4 |
| March 2013 | 0 | 46 | 9 |
| February 2013 | 1 | 34 | 4 |
| January 2013 | 0 | 44 | 4 |
| December 2012 | 0 | 27 | 2 |
| November 2012 | 0 | 99 | 11 |
| October 2012 | 0 | 57 | 10 |
| September 2012 | 1 | 51 | 7 |
| August 2012 | 5 | 57 | 14 |
| July 2012 | 7 | 60 | 12 |
| June 2012 | 20 | 32 | 5 |
| May 2012 | 40 | 11 | 9 |
| April 2012 | 3 | 41 | 4 |
| March 2012 | 0 | 50 | 5 |
| February 2012 | 0 | 57 | 12 |
| January 2012 | 0 | 59 | 10 |
| December 2011 | 0 | 42 | 2 |
| November 2011 | 18 | 41 | 10 |
| October 2011 | 52 | 21 | 20 |
| September 2011 | 25 | 7 | 10 |
| August 2011 | 37 | 13 | 13 |
| July 2011 | 29 | 15 | 16 |
| June 2011 | 33 | 18 | 18 |
| May 2011 | 52 | 22 | 14 |
| April 2011 | 55 | 22 | 28 |
| March 2011 | 32 | 41 | 23 |
| February 2011 | 9 | 55 | 23 |
| January 2011 | 6 | 36 | 15 |
| December 2010 | 7 | 42 | 15 |
| November 2010 | 4 | 57 | 27 |
| October 2010 | 27 | 63 | 36 |
| September 2010 | 36 | 27 | 21 |
| August 2010 | 49 | 23 | 15 |
| July 2010 | 43 | 55 | 25 |
| June 2010 | 36 | 18 | 19 |
| May 2010 | 40 | 20 | 23 |
| April 2010 | 45 | 6 | 25 |
| March 2010 | 62 | 6 | 21 |
| February 2010 | 41 | 15 | 21 |
| January 2010 | 59 | 23 | 28 |
| December 2009 | 64 | 23 | 17 |
| November 2009 | 79 | 18 | 26 |
| October 2009 | 60 | 20 | 15 |
| September 2009 | 26 | 34 | 15 |
| August 2009 | 12 | 19 | 14 |
| July 2009 | 34 | 18 | 6 |
| June 2009 | 72 | 16 | 15 |
| May 2009 | 87 | 30 | 23 |
| April 2009 | 21 | 19 | 14 |
| March 2009 | 22 | 21 | 9 |
| February 2009 | 18 | 11 | 11 |
| January 2009 | 23 | 16 | 10 |
| December 2008 | 12 | 30 | 29 |
| November 2008 | 38 | 34 | 16 |
| October 2008 | 27 | 51 | 38 |
| September 2008 | 26 | 25 | 15 |
| August 2008 | 22 | 16 | 20 |
| July 2008 | 27 | 36 | 27 |
| June 2008 | 19 | 25 | 18 |
| May 2008 | 20 | 37 | 26 |
| April 2008 | 38 | 41 | 25 |
| March 2008 | 50 | 54 | 32 |
| February 2008 | 34 | 51 | 19 |
| January 2008 | 49 | 66 | 16 |
| December 2007 | 32 | 28 | 13 |
| November 2007 | 31 | 59 | 14 |
| October 2007 | 24 | 53 | 22 |
| September 2007 | 9 | 44 | 17 |
| August 2007 | 24 | 34 | 18 |
| July 2007 | 16 | 57 | 19 |
| June 2007 | 22 | 43 | 20 |
| May 2007 | 26 | 43 | 34 |
| April 2007 | 23 | 104 | 31 |
| March 2007 | 27 | 221 | 28 |
| February 2007 | 15 | 66 | 20 |
| January 2007 | 16 | 58 | 32 |
| December 2006 | 16 | 35 | 16 |
| November 2006 | 24 | 53 | 28 |
| October 2006 | 23 | 50 | 33 |
| September 2006 | 22 | 34 | 25 |
| August 2006 | 14 | 32 | 20 |
| July 2006 | 25 | 35 | 23 |
| June 2006 | 15 | 36 | 22 |
| May 2006 | 28 | 61 | 45 |
| April 2006 | 22 | 57 | 34 |
| March 2006 | 26 | 67 | 42 |
| February 2006 | 34 | 66 | 20 |
| January 2006 | 41 | 94 | 46 |
| December 2005 | 20 | 44 | 54 |
| November 2005 | 34 | 90 | 78 |
| October 2005 | 31 | 97 | 75 |
| September 2005 | 9 | 87 | 77 |
| August 2005 | 14 | 97 | 67 |
| July 2005 | 18 | 37 | 53 |
| June 2005 | 17 | 69 | 65 |
| May 2005 | 35 | 75 | 61 |
| April 2005 | 27 | 99 | 58 |
| March 2005 | 49 | 106 | 69 |
| February 2005 | 53 | 154 | 66 |
| January 2005 | 64 | 154 | 27 |
| December 2004 | 67 | 111 | 40 |
| November 2004 | 48 | 121 | 44 |
| October 2004 | 23 | 112 | 36 |
| September 2004 | 27 | 89 | 34 |
| August 2004 | 59 | 112 | 22 |
| July 2004 | 74 | 118 | 55 |
| June 2004 | 95 | 136 | 44 |
| May 2004 | 41 | 106 | 51 |
| April 2004 | 46 | 87 | 24 |
| March 2004 | 38 | 77 | 43 |
| February 2004 | 38 | 59 | 48 |
| January 2004 | 43 | 68 | 31 |
| December 2003 | 29 | 50 | 31 |
| November 2003 | 43 | 71 | 38 |
| October 2003 | 30 | 59 | 47 |
| September 2003 | 37 | 58 | 52 |
| August 2003 | 58 | 92 | 25 |
| July 2003 | 42 | 69 | 49 |








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