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 | 2 | 322 | 51 |
| May 2013 | 7 | 722 | 112 |
| April 2013 | 3 | 573 | 63 |
| March 2013 | 0 | 474 | 50 |
| February 2013 | 0 | 401 | 52 |
| January 2013 | 0 | 340 | 58 |
| December 2012 | 0 | 384 | 67 |
| November 2012 | 1 | 732 | 110 |
| October 2012 | 0 | 631 | 99 |
| September 2012 | 15 | 413 | 79 |
| August 2012 | 11 | 378 | 61 |
| July 2012 | 27 | 468 | 103 |
| June 2012 | 104 | 370 | 88 |
| May 2012 | 236 | 208 | 120 |
| April 2012 | 3 | 523 | 86 |
| March 2012 | 0 | 631 | 104 |
| February 2012 | 0 | 470 | 114 |
| January 2012 | 0 | 455 | 102 |
| December 2011 | 0 | 409 | 100 |
| November 2011 | 107 | 374 | 122 |
| October 2011 | 402 | 198 | 117 |
| September 2011 | 243 | 140 | 94 |
| August 2011 | 181 | 143 | 93 |
| July 2011 | 236 | 211 | 91 |
| June 2011 | 235 | 222 | 101 |
| May 2011 | 276 | 228 | 124 |
| April 2011 | 356 | 299 | 138 |
| March 2011 | 227 | 392 | 147 |
| February 2011 | 29 | 580 | 137 |
| January 2011 | 36 | 469 | 98 |
| December 2010 | 78 | 396 | 124 |
| November 2010 | 87 | 605 | 132 |
| October 2010 | 114 | 544 | 129 |
| September 2010 | 256 | 316 | 102 |
| August 2010 | 222 | 221 | 95 |
| July 2010 | 229 | 185 | 82 |
| June 2010 | 233 | 216 | 63 |
| May 2010 | 277 | 312 | 106 |
| April 2010 | 327 | 272 | 93 |
| March 2010 | 316 | 304 | 97 |
| February 2010 | 208 | 235 | 81 |
| January 2010 | 227 | 235 | 91 |
| December 2009 | 237 | 188 | 84 |
| November 2009 | 334 | 307 | 116 |
| October 2009 | 359 | 325 | 124 |
| September 2009 | 421 | 194 | 95 |
| August 2009 | 209 | 206 | 105 |
| July 2009 | 229 | 154 | 94 |
| June 2009 | 205 | 169 | 82 |
| May 2009 | 314 | 187 | 146 |
| April 2009 | 392 | 148 | 118 |
| March 2009 | 358 | 253 | 159 |
| February 2009 | 264 | 178 | 104 |
| January 2009 | 228 | 157 | 88 |
| December 2008 | 198 | 137 | 77 |
| November 2008 | 285 | 190 | 99 |
| October 2008 | 252 | 181 | 118 |
| September 2008 | 184 | 150 | 81 |
| August 2008 | 87 | 173 | 65 |
| July 2008 | 81 | 195 | 71 |
| June 2008 | 79 | 238 | 70 |
| May 2008 | 87 | 226 | 64 |
| April 2008 | 139 | 155 | 90 |
| March 2008 | 226 | 236 | 112 |
| February 2008 | 163 | 189 | 92 |
| January 2008 | 146 | 208 | 68 |
| December 2007 | 114 | 218 | 63 |
| November 2007 | 179 | 212 | 113 |
| October 2007 | 120 | 285 | 86 |
| September 2007 | 120 | 239 | 108 |
| August 2007 | 135 | 276 | 120 |
| July 2007 | 107 | 213 | 96 |
| June 2007 | 85 | 163 | 55 |
| May 2007 | 98 | 285 | 98 |
| April 2007 | 82 | 274 | 79 |
| March 2007 | 95 | 228 | 104 |
| February 2007 | 75 | 162 | 112 |
| January 2007 | 91 | 206 | 107 |
| December 2006 | 60 | 223 | 65 |
| November 2006 | 104 | 228 | 121 |
| October 2006 | 73 | 256 | 123 |
| September 2006 | 81 | 226 | 110 |
| August 2006 | 63 | 148 | 106 |
| July 2006 | 56 | 149 | 110 |
| June 2006 | 98 | 177 | 106 |
| May 2006 | 166 | 307 | 143 |
| April 2006 | 121 | 363 | 122 |
| March 2006 | 90 | 414 | 160 |
| February 2006 | 97 | 358 | 135 |
| January 2006 | 69 | 285 | 133 |
| December 2005 | 69 | 224 | 118 |
| November 2005 | 99 | 325 | 167 |
| October 2005 | 106 | 307 | 140 |
| September 2005 | 80 | 259 | 151 |
| August 2005 | 75 | 237 | 118 |
| July 2005 | 72 | 168 | 113 |
| June 2005 | 73 | 203 | 135 |
| May 2005 | 96 | 304 | 111 |
| April 2005 | 90 | 283 | 149 |
| March 2005 | 124 | 300 | 183 |
| February 2005 | 131 | 253 | 154 |
| January 2005 | 83 | 298 | 162 |
| December 2004 | 97 | 210 | 130 |
| November 2004 | 83 | 191 | 123 |
| October 2004 | 98 | 238 | 170 |
| September 2004 | 158 | 250 | 118 |
| August 2004 | 154 | 250 | 191 |
| July 2004 | 131 | 353 | 228 |
| June 2004 | 230 | 566 | 356 |
| May 2004 | 704 | 1488 | 1164 |








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