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Retraction statement
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Online download statistics by month: October 2004 to January 2024

AbstractFullPdf
Oct 2004060
Nov 200420916523
Dec 200440498
Jan 200514262
Feb 200515133
Mar 20055217
Apr 20051100
May 2005350
Jun 2005220
Jul 2005663
Aug 2005740
Sep 2005330
Oct 20051147
Nov 2005464
Dec 2005130
Jan 20060185
Feb 2006672
Mar 20062122
Apr 2006062
May 20061101
Jun 20061124
Jul 2006150
Aug 2006261
Sep 2006295
Oct 2006242
Nov 2006064
Dec 2006146
Jan 20076157
Feb 2007234
Mar 2007124
Apr 2007301
May 20071143
Jun 2007521
Jul 2007211
Aug 2007311
Sep 2007012
Oct 2007110
Nov 2007210
Dec 2007252
Jan 2008101
Feb 2008101
Mar 2008202
Apr 2008301
Jun 2008011
Jul 2008500
Aug 2008823
Sep 2008400
Oct 2008120
Nov 2008310
Dec 2008010
Jan 2009100
Feb 2009250
Mar 2009021
Apr 2009010
Jun 2009010
Jul 2009200
Aug 2009200
Sep 2009111
Nov 2009420
Dec 2009210
Jan 2010402
Feb 2010610
Mar 2010301
Apr 2010310
May 2010341
Jun 2010400
Jul 2010211
Aug 2010510
Sep 2010300
Oct 2010510
Nov 20101001
Dec 2010310
Jan 2011810
Feb 2011121
Mar 2011200
Apr 2011210
May 2011300
Jun 2011420
Jul 20111221
Aug 2011800
Sep 2011700
Oct 2011810
Nov 20111512
Dec 2011552
Jan 2012321
Feb 2012530
Mar 2012400
Apr 2012411
May 2012543
Jun 20121164
Jul 2012822
Aug 2012442
Sep 2012440
Oct 2012442
Nov 2012062
Dec 20120101
Jan 2013071
Feb 2013031
Mar 2013040
Apr 2013094
May 20130131
Jun 2013100
Jul 2013310
Aug 2013110
Sep 2013600
Oct 2013210
Nov 2013100
Dec 2013400
Jan 2014210
Feb 2014320
Mar 20141240
Apr 20141354
May 2014640
Jun 2014400
Jul 2014881
Aug 2014741
Sep 2014530
Oct 2014330
Nov 2014430
Dec 2014110
Jan 2015320
Feb 2015233
Mar 2015410
Apr 20151120
May 2015411
Jun 2015210
Jul 2015610
Aug 2015340
Sep 20151041
Oct 2015511
Nov 2015560
Dec 20151380
Jan 201610501
Feb 2016300
Mar 2016117
Apr 2016406
May 2016232
Jun 2016151
Jul 2016310
Aug 2016542
Sep 2016971
Oct 2016312
Nov 2016830
Dec 2016321
Jan 2017250
Feb 2017010
Mar 20170122
Apr 20170184
May 20170101
Jun 20174173
Jul 201713130
Aug 201712130
Sep 201723230
Oct 2017990
Nov 201711110
Dec 2017330
Jan 2018990
Feb 20181771
Mar 201822220
Apr 20181282
May 201824230
Jun 201814141
Jul 201816161
Aug 201813131
Sep 201810101
Oct 201812120
Nov 201814141
Dec 201814143
Jan 201912120
Feb 20191183
Mar 201915152
Apr 201916160
May 201920201
Jun 201914132
Jul 2019770
Aug 2019332
Sep 2019661
Oct 201911112
Nov 2019550
Dec 2019882
Jan 202012121
Feb 202010103
Mar 2020331
Apr 2020661
May 2020660
Jun 2020222
Jul 2020330
Aug 2020330
Sep 2020880
Oct 2020330
Nov 2020331
Dec 2020771
Jan 2021431
Feb 2021442
Mar 2021661
Apr 2021662
May 2021110
Jun 2021110
Jul 2021330
Aug 2021001
Sep 2021220
Oct 2021770
Nov 2021440
Dec 2021441
Jan 2022552
Feb 2022550
Mar 2022440
Apr 2022760
May 202222230
Jun 202216161
Jul 202210100
Aug 202223230
Sep 202220201
Oct 202219192
Nov 202214140
Jan 2023761
Feb 202320200
Mar 2023430
Apr 2023110
May 2023443
Jun 2023330
Jul 2023665
Aug 2023333
Sep 2023460
Oct 2023330
Nov 202311110
Dec 2023220
Jan 2024330
Total14991491272