Article metrics

Download PDFPDF
Corrections: the purple heart problem (April 17, p. 32)

 

Online download statistics by month:

Online download statistics by month: December 2009 to January 2024

AbstractFullPdf
Dec 2009100
Jan 2010100
Aug 2010100
Oct 2010100
Dec 2010100
Mar 2011100
May 2011100
Jul 2011500
Sep 2011100
Oct 2011600
Nov 2011900
Dec 2011600
Jan 2012400
Feb 2012100
Mar 2012400
Apr 2012100
Oct 2012300
Nov 2012100
Jan 2013400
Feb 2013200
Mar 2013300
Apr 2013300
May 2013400
Jun 2013200
Oct 2013100
Dec 2013200
Mar 2014500
Apr 2014400
Jun 2014400
Oct 2014100
Mar 2015100
Jun 2015201
Jul 2015600
Sep 2015100
Dec 2015100
Jan 2016100
Feb 2016500
Sep 2016600
Oct 2016100
Dec 2016100
Jan 2017300
Feb 2017700
Mar 2017100
Apr 2017300
May 2017600
Jun 2017800
Jul 2017800
Aug 2017800
Sep 20171400
Oct 20171000
Nov 20171600
Dec 20174200
Jan 20182400
Feb 20181000
Mar 20183400
Apr 2018800
May 20181000
Jun 2018600
Jul 20181200
Aug 20181600
Oct 20183000
Nov 20183400
Dec 20183000
Jan 20192200
Feb 20192800
Mar 2019800
May 2019200
Jul 2019200
Aug 2019200
Sep 2019200
Oct 2019200
Dec 2019400
Jan 2020200
Feb 20201200
May 2020800
Jun 2020200
Jul 2020600
Aug 20201000
Sep 2020600
Oct 2020400
Nov 2020200
Dec 20201200
Jan 2021200
Feb 2021400
Mar 2021400
Apr 2021400
Oct 20211000
Nov 2021400
Dec 2021400
Jan 20222400
Feb 20221800
Mar 20222800
Apr 20221400
May 20223600
Jun 20223400
Jul 20222000
Aug 20223400
Sep 20223400
Oct 20225600
Nov 20221600
Dec 20221600
Jan 2023802
Feb 20234400
Mar 2023200
Apr 2023400
May 2023800
Jul 20231600
Aug 2023600
Sep 2023600
Oct 2023600
Nov 2023800
Dec 2023200
Jan 2024600
Total106203