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 | |
|---|---|---|---|
| June 2013 | 28 | 7 | 3 |
| May 2013 | 56 | 6 | 0 |
| April 2013 | 43 | 8 | 2 |
| March 2013 | 61 | 13 | 3 |
| February 2013 | 34 | 0 | 0 |
| January 2013 | 52 | 9 | 0 |
| December 2012 | 63 | 7 | 1 |
| November 2012 | 90 | 1 | 0 |
| October 2012 | 107 | 8 | 1 |
| September 2012 | 62 | 8 | 0 |
| August 2012 | 75 | 14 | 0 |
| July 2012 | 99 | 17 | 1 |
| June 2012 | 116 | 7 | 1 |
| May 2012 | 142 | 22 | 4 |
| April 2012 | 88 | 16 | 1 |
| March 2012 | 163 | 19 | 1 |
| February 2012 | 220 | 17 | 3 |
| January 2012 | 220 | 87 | 1 |
| December 2011 | 0 | 262 | 3 |
| November 2011 | 0 | 143 | 56 |
| October 2011 | 7 | 95 | 83 |
| September 2011 | 6 | 113 | 87 |
| August 2011 | 9 | 113 | 110 |
| July 2011 | 1499 | 367 | 60 |
| June 2011 | 2060 | 62 | 14 |
| May 2011 | 1952 | 53 | 18 |
| April 2011 | 2412 | 70 | 24 |
| March 2011 | 2305 | 89 | 16 |
| February 2011 | 2431 | 53 | 8 |
| January 2011 | 1893 | 57 | 20 |
| December 2010 | 1751 | 71 | 13 |
| November 2010 | 1166 | 51 | 19 |
| October 2010 | 128 | 3 | 13 |
| September 2010 | 117 | 9 | 11 |
| August 2010 | 44 | 6 | 13 |
| July 2010 | 63 | 14 | 8 |
| June 2010 | 86 | 12 | 9 |
| May 2010 | 64 | 13 | 25 |
| April 2010 | 51 | 19 | 21 |
| March 2010 | 33 | 12 | 14 |
| February 2010 | 25 | 5 | 15 |
| January 2010 | 32 | 5 | 11 |
| December 2009 | 45 | 4 | 6 |
| November 2009 | 57 | 14 | 15 |
| October 2009 | 102 | 11 | 28 |
| September 2009 | 129 | 14 | 21 |
| August 2009 | 94 | 18 | 15 |
| July 2009 | 106 | 18 | 15 |
| June 2009 | 80 | 23 | 23 |
| May 2009 | 29 | 5 | 15 |
| April 2009 | 44 | 17 | 14 |
| March 2009 | 35 | 12 | 17 |
| February 2009 | 28 | 19 | 32 |
| January 2009 | 29 | 20 | 48 |
| December 2008 | 2 | 59 | 115 |
| November 2008 | 4 | 101 | 148 |
| October 2008 | 5 | 77 | 116 |
| September 2008 | 5 | 55 | 116 |
| August 2008 | 5 | 58 | 75 |
| July 2008 | 4 | 51 | 134 |
| June 2008 | 1 | 67 | 175 |
| May 2008 | 0 | 77 | 177 |
| April 2008 | 8 | 62 | 140 |
| March 2008 | 1 | 56 | 121 |
| February 2008 | 0 | 57 | 138 |
| January 2008 | 3 | 65 | 126 |
| December 2007 | 6 | 75 | 147 |
| November 2007 | 3 | 68 | 121 |
| October 2007 | 1 | 181 | 145 |
| September 2007 | 2 | 82 | 143 |
| August 2007 | 7 | 79 | 145 |
| July 2007 | 3 | 51 | 129 |
| June 2007 | 2 | 67 | 130 |
| May 2007 | 3 | 79 | 153 |
| April 2007 | 7 | 84 | 300 |
| March 2007 | 3 | 73 | 294 |
| February 2007 | 0 | 103 | 239 |
| January 2007 | 3 | 96 | 308 |
| December 2006 | 3 | 70 | 216 |
| November 2006 | 7 | 120 | 255 |
| October 2006 | 5 | 127 | 200 |
| September 2006 | 5 | 116 | 162 |
| August 2006 | 1 | 127 | 18 |
| July 2006 | 9 | 83 | 23 |
| June 2006 | 5 | 115 | 31 |
| May 2006 | 8 | 126 | 23 |
| April 2006 | 17 | 131 | 29 |
| March 2006 | 5 | 122 | 24 |
| February 2006 | 7 | 129 | 25 |
| January 2006 | 10 | 154 | 21 |
| December 2005 | 2 | 87 | 23 |
| November 2005 | 7 | 145 | 25 |
| October 2005 | 5 | 108 | 29 |
| September 2005 | 4 | 112 | 27 |
| August 2005 | 20 | 84 | 33 |
| July 2005 | 4 | 80 | 29 |
| June 2005 | 8 | 92 | 37 |
| May 2005 | 8 | 92 | 31 |
| April 2005 | 10 | 78 | 47 |
| March 2005 | 11 | 151 | 33 |
| February 2005 | 17 | 145 | 40 |
| January 2005 | 13 | 138 | 70 |
| December 2004 | 31 | 119 | 30 |
| November 2004 | 15 | 123 | 27 |
| October 2004 | 11 | 113 | 27 |
| September 2004 | 1 | 146 | 33 |
| August 2004 | 3 | 130 | 30 |
| July 2004 | 5 | 158 | 20 |
| June 2004 | 0 | 187 | 18 |
| May 2004 | 1 | 163 | 27 |
| April 2004 | 0 | 85 | 18 |
| March 2004 | 0 | 120 | 24 |
| February 2004 | 1 | 111 | 21 |
| January 2004 | 5 | 115 | 20 |
| December 2003 | 0 | 116 | 18 |
| November 2003 | 0 | 120 | 24 |
| October 2003 | 2 | 76 | 16 |
| September 2003 | 0 | 67 | 19 |
| August 2003 | 0 | 80 | 43 |
| July 2003 | 0 | 169 | 30 |








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