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 | 1033 | 342 | 0 |
| April 2013 | 989 | 359 | 0 |
| March 2013 | 933 | 347 | 0 |
| February 2013 | 754 | 347 | 0 |
| January 2013 | 752 | 281 | 0 |
| December 2012 | 606 | 220 | 0 |
| November 2012 | 1116 | 453 | 0 |
| October 2012 | 780 | 352 | 0 |
| September 2012 | 206 | 298 | 0 |
| August 2012 | 39 | 282 | 0 |
| July 2012 | 49 | 254 | 0 |
| June 2012 | 71 | 269 | 0 |
| May 2012 | 107 | 285 | 0 |
| April 2012 | 686 | 298 | 0 |
| March 2012 | 738 | 330 | 0 |
| February 2012 | 1033 | 387 | 0 |
| January 2012 | 876 | 587 | 0 |
| December 2011 | 0 | 1203 | 0 |
| November 2011 | 37 | 1288 | 0 |
| October 2011 | 123 | 1279 | 0 |
| September 2011 | 97 | 915 | 0 |
| August 2011 | 106 | 796 | 0 |
| July 2011 | 439 | 479 | 0 |
| June 2011 | 914 | 279 | 0 |
| May 2011 | 860 | 345 | 0 |
| April 2011 | 863 | 356 | 0 |
| March 2011 | 1235 | 491 | 0 |
| February 2011 | 1062 | 414 | 0 |
| January 2011 | 1157 | 393 | 0 |
| December 2010 | 953 | 343 | 0 |
| November 2010 | 1264 | 441 | 0 |
| October 2010 | 1355 | 630 | 0 |
| September 2010 | 1008 | 382 | 0 |
| August 2010 | 674 | 460 | 0 |
| July 2010 | 613 | 566 | 1 |
| June 2010 | 626 | 446 | 0 |
| May 2010 | 726 | 589 | 0 |
| April 2010 | 792 | 584 | 0 |
| March 2010 | 1026 | 640 | 1 |
| February 2010 | 607 | 475 | 0 |
| January 2010 | 556 | 266 | 1 |
| December 2009 | 612 | 199 | 0 |
| November 2009 | 760 | 515 | 1 |
| October 2009 | 661 | 563 | 1 |
| September 2009 | 528 | 426 | 0 |
| August 2009 | 474 | 387 | 0 |
| July 2009 | 461 | 397 | 0 |
| June 2009 | 510 | 658 | 0 |
| May 2009 | 569 | 501 | 0 |
| April 2009 | 524 | 602 | 0 |
| March 2009 | 647 | 1150 | 0 |
| February 2009 | 530 | 795 | 1 |
| January 2009 | 520 | 789 | 1 |
| December 2008 | 116 | 866 | 1 |
| November 2008 | 100 | 1045 | 1 |
| October 2008 | 178 | 1522 | 1 |
| September 2008 | 127 | 1158 | 0 |
| August 2008 | 77 | 950 | 0 |
| July 2008 | 80 | 1015 | 0 |
| June 2008 | 59 | 1416 | 0 |
| May 2008 | 53 | 1112 | 0 |
| April 2008 | 93 | 1288 | 0 |
| March 2008 | 125 | 1289 | 0 |
| February 2008 | 119 | 1362 | 0 |
| January 2008 | 163 | 1455 | 0 |
| December 2007 | 102 | 1052 | 0 |
| November 2007 | 96 | 1483 | 0 |
| October 2007 | 101 | 1481 | 0 |
| September 2007 | 70 | 1123 | 0 |
| August 2007 | 61 | 900 | 0 |
| July 2007 | 66 | 824 | 0 |
| June 2007 | 82 | 1087 | 0 |
| May 2007 | 79 | 1240 | 0 |
| April 2007 | 61 | 1133 | 0 |
| March 2007 | 74 | 1311 | 0 |
| February 2007 | 80 | 917 | 0 |
| January 2007 | 100 | 1114 | 0 |
| December 2006 | 74 | 832 | 0 |
| November 2006 | 87 | 1130 | 0 |
| October 2006 | 104 | 1123 | 0 |
| September 2006 | 106 | 1161 | 0 |
| August 2006 | 90 | 835 | 0 |
| July 2006 | 92 | 793 | 0 |
| June 2006 | 65 | 699 | 0 |
| May 2006 | 72 | 855 | 0 |
| April 2006 | 68 | 901 | 0 |
| March 2006 | 72 | 835 | 0 |
| February 2006 | 70 | 960 | 1 |
| January 2006 | 60 | 717 | 0 |
| December 2005 | 41 | 575 | 0 |
| November 2005 | 48 | 529 | 1 |
| October 2005 | 50 | 626 | 0 |
| September 2005 | 48 | 498 | 0 |
| August 2005 | 31 | 312 | 0 |
| July 2005 | 25 | 345 | 0 |
| June 2005 | 19 | 253 | 0 |
| May 2005 | 24 | 376 | 0 |
| April 2005 | 19 | 362 | 0 |
| March 2005 | 36 | 471 | 0 |
| February 2005 | 36 | 497 | 1 |
| January 2005 | 29 | 466 | 0 |
| December 2004 | 59 | 410 | 0 |
| November 2004 | 38 | 624 | 2 |
| October 2004 | 20 | 422 | 0 |
| September 2004 | 20 | 677 | 0 |
| August 2004 | 3 | 502 | 0 |
| July 2004 | 1 | 442 | 0 |
| June 2004 | 2 | 395 | 0 |
| May 2004 | 1 | 404 | 0 |
| April 2004 | 0 | 359 | 0 |
| March 2004 | 2 | 436 | 0 |
| February 2004 | 1 | 351 | 0 |
| January 2004 | 0 | 305 | 0 |
| December 2003 | 0 | 285 | 0 |
| November 2003 | 0 | 351 | 0 |
| October 2003 | 0 | 370 | 0 |
| September 2003 | 0 | 305 | 0 |
| August 2003 | 0 | 226 | 0 |
| July 2003 | 0 | 196 | 0 |








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