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 | 239 | 0 |
| April 2013 | 3 | 203 | 0 |
| March 2013 | 1 | 165 | 0 |
| February 2013 | 2 | 68 | 0 |
| January 2013 | 1 | 471 | 0 |
| December 2012 | 1 | 101 | 0 |
| November 2012 | 3 | 150 | 0 |
| October 2012 | 1 | 123 | 0 |
| September 2012 | 2 | 48 | 0 |
| August 2012 | 9 | 43 | 0 |
| July 2012 | 0 | 114 | 0 |
| June 2012 | 4 | 51 | 0 |
| May 2012 | 9 | 313 | 0 |
| April 2012 | 0 | 96 | 0 |
| March 2012 | 0 | 130 | 0 |
| February 2012 | 0 | 135 | 0 |
| January 2012 | 0 | 189 | 0 |
| December 2011 | 0 | 278 | 0 |
| November 2011 | 1 | 91 | 0 |
| October 2011 | 10 | 145 | 0 |
| September 2011 | 6 | 83 | 0 |
| August 2011 | 10 | 62 | 0 |
| July 2011 | 9 | 61 | 0 |
| June 2011 | 5 | 72 | 0 |
| May 2011 | 7 | 71 | 0 |
| April 2011 | 11 | 72 | 0 |
| March 2011 | 4 | 111 | 0 |
| February 2011 | 1 | 124 | 0 |
| January 2011 | 6 | 198 | 0 |
| December 2010 | 3 | 203 | 0 |
| November 2010 | 6 | 198 | 0 |
| October 2010 | 5 | 156 | 0 |
| September 2010 | 6 | 173 | 0 |
| August 2010 | 9 | 140 | 0 |
| July 2010 | 5 | 191 | 0 |
| June 2010 | 1 | 123 | 0 |
| May 2010 | 9 | 180 | 0 |
| April 2010 | 4 | 169 | 0 |
| March 2010 | 7 | 246 | 0 |
| February 2010 | 4 | 377 | 0 |
| January 2010 | 4 | 183 | 0 |
| December 2009 | 20 | 147 | 0 |
| November 2009 | 10 | 139 | 0 |
| October 2009 | 13 | 109 | 0 |
| September 2009 | 9 | 126 | 0 |
| August 2009 | 9 | 87 | 0 |
| July 2009 | 7 | 94 | 0 |
| June 2009 | 8 | 115 | 0 |
| May 2009 | 28 | 100 | 0 |
| April 2009 | 73 | 89 | 0 |
| March 2009 | 20 | 167 | 0 |
| February 2009 | 9 | 158 | 0 |
| January 2009 | 6 | 161 | 2 |
| December 2008 | 14 | 144 | 0 |
| November 2008 | 10 | 296 | 0 |
| October 2008 | 8 | 199 | 0 |
| September 2008 | 12 | 194 | 0 |
| August 2008 | 14 | 139 | 0 |
| July 2008 | 4 | 129 | 0 |
| June 2008 | 15 | 1533 | 0 |
| May 2008 | 8 | 187 | 0 |
| April 2008 | 18 | 170 | 0 |
| March 2008 | 24 | 122 | 0 |
| February 2008 | 20 | 141 | 0 |
| January 2008 | 18 | 289 | 0 |
| December 2007 | 19 | 151 | 0 |
| November 2007 | 6 | 183 | 0 |
| October 2007 | 19 | 197 | 0 |
| September 2007 | 23 | 147 | 0 |
| August 2007 | 13 | 102 | 0 |
| July 2007 | 7 | 90 | 0 |
| June 2007 | 12 | 148 | 0 |
| May 2007 | 22 | 214 | 0 |
| April 2007 | 22 | 197 | 0 |
| March 2007 | 13 | 229 | 0 |
| February 2007 | 9 | 195 | 0 |
| January 2007 | 12 | 248 | 0 |
| December 2006 | 12 | 167 | 0 |
| November 2006 | 24 | 210 | 0 |
| October 2006 | 15 | 236 | 0 |
| September 2006 | 14 | 180 | 0 |
| August 2006 | 39 | 405 | 0 |
| July 2006 | 5 | 96 | 0 |
| June 2006 | 11 | 109 | 0 |
| May 2006 | 13 | 170 | 0 |
| April 2006 | 11 | 150 | 0 |
| March 2006 | 18 | 232 | 0 |
| February 2006 | 21 | 164 | 0 |
| January 2006 | 51 | 204 | 0 |
| December 2005 | 45 | 173 | 0 |
| November 2005 | 8 | 123 | 1 |
| October 2005 | 11 | 225 | 0 |
| September 2005 | 3 | 240 | 0 |
| August 2005 | 12 | 67 | 0 |
| July 2005 | 3 | 146 | 0 |
| June 2005 | 12 | 158 | 0 |
| May 2005 | 7 | 104 | 0 |
| April 2005 | 13 | 298 | 0 |
| March 2005 | 15 | 360 | 0 |
| February 2005 | 9 | 428 | 0 |
| January 2005 | 25 | 183 | 0 |
| December 2004 | 37 | 237 | 0 |
| November 2004 | 20 | 182 | 0 |
| October 2004 | 23 | 220 | 0 |
| September 2004 | 17 | 165 | 0 |
| August 2004 | 22 | 130 | 0 |
| July 2004 | 16 | 100 | 0 |
| June 2004 | 19 | 196 | 0 |
| May 2004 | 25 | 130 | 0 |
| April 2004 | 18 | 134 | 0 |
| March 2004 | 15 | 148 | 0 |
| February 2004 | 19 | 147 | 0 |
| January 2004 | 13 | 139 | 0 |
| December 2003 | 11 | 96 | 0 |
| November 2003 | 9 | 102 | 0 |
| October 2003 | 12 | 154 | 0 |
| September 2003 | 10 | 130 | 0 |
| August 2003 | 9 | 59 | 0 |
| July 2003 | 16 | 66 | 0 |








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