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Exceptionally difficult

 

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Online download statistics by month: November 2011 to October 2024

AbstractFullPdf
Nov 2011263200103
Dec 20111282548
Jan 2012116816
Feb 20126527
Mar 20122733
Apr 20123534
May 20123300
Jun 20122810
Jul 20123510
Aug 20121201
Sep 20123310
Oct 20122300
Nov 2012011
Jan 2013010
Feb 2013011
Apr 2013010
May 2013020
Jun 2013800
Jul 2013100
Aug 2013200
Oct 2013350
Nov 20132140
Dec 20131100
Jan 2014300
Feb 2014500
Mar 2014800
Apr 2014800
May 2014201
Jun 2014600
Jul 2014420
Aug 2014600
Sep 2014410
Oct 2014500
Nov 20141300
Dec 2014400
Jan 2015800
Feb 2015511
Mar 2015800
Apr 2015500
May 2015500
Jun 2015901
Jul 20151500
Aug 2015901
Sep 2015800
Oct 2015100
Nov 2015500
Dec 20151700
Jan 2016200
Feb 2016200
Mar 2016100
Apr 2016100
May 2016300
Jul 2016001
Jan 2017400
Feb 2017600
Mar 2017100
Apr 2017310
May 2017600
Jun 2017600
Jul 2017400
Aug 20171300
Sep 20171600
Oct 20172300
Nov 2017900
Dec 20171000
Jan 20183800
Feb 2018400
Mar 20181510
Apr 2018700
May 20181500
Jun 20181200
Jul 20181810
Aug 2018700
Sep 20181210
Oct 20181500
Nov 20182800
Dec 20183900
Jan 20192500
Feb 20192100
Mar 20191500
Apr 20191300
May 2019710
Jun 2019600
Jul 20191020
Aug 20192110
Sep 20191100
Oct 20191800
Nov 2019900
Dec 20191600
Jan 2020800
Feb 20201800
Mar 2020200
Apr 2020800
May 20201200
Jun 2020600
Jul 2020800
Aug 2020200
Sep 20201900
Oct 2020700
Nov 2020400
Dec 20201100
Jan 2021510
Feb 2021200
Mar 2021100
Apr 2021110
Oct 20211600
Nov 2021200
Dec 20211000
Jan 20221310
Feb 20221110
Mar 20221500
Apr 20221200
May 20224300
Jun 20222710
Jul 20221610
Aug 20227010
Sep 20224000
Oct 20223800
Nov 20221900
Dec 2022200
Jan 2023700
Feb 20234800
Apr 2023600
May 2023600
Jul 2023510
Aug 2023900
Sep 20231000
Oct 2023400
Nov 2023400
Dec 2023610
Jan 2024600
Feb 20243000
Mar 20241000
Apr 20241800
May 2024700
Jun 20242100
Jul 2024700
Aug 20242500
Sep 2024711
Oct 20241400
Total2178291190