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Volume 94, Issue 2
CORRECTION
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This article has a correction. Please see:
Reverse of Errata (points from the correction to the corrected article) - July 01, 2012
PDF
Correction
CORRECTION
Free
Online download statistics by month:
Online download statistics by month: February 2009 to March 2024
Abstract
Full
Pdf
Feb 2009
54
6
4
Mar 2009
244
7
12
Apr 2009
216
1
0
May 2009
0
0
2
Jun 2009
5
2
4
Jul 2009
1
0
0
Aug 2009
2
2
1
Sep 2009
0
2
3
Oct 2009
3
2
2
Nov 2009
2
2
0
Dec 2009
1
0
0
Jan 2010
1
4
2
Feb 2010
1
7
1
Mar 2010
2
3
1
Apr 2010
0
1
1
May 2010
2
1
2
Jun 2010
3
0
2
Jul 2010
0
1
0
Aug 2010
1
3
0
Oct 2010
1
1
0
Nov 2010
3
1
1
Dec 2010
1
1
1
Jan 2011
4
1
0
Feb 2011
4
0
0
Mar 2011
3
0
0
Apr 2011
2
0
0
May 2011
1
0
0
Jun 2011
4
0
0
Jul 2011
11
0
0
Aug 2011
4
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0
Sep 2011
2
0
0
Oct 2011
5
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Nov 2011
13
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0
Dec 2011
15
0
0
Jan 2012
16
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1
Feb 2012
16
0
0
Mar 2012
11
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0
Apr 2012
14
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0
May 2012
7
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2
Jun 2012
17
0
0
Jul 2012
7
0
0
Aug 2012
6
0
1
Sep 2012
2
0
0
Oct 2012
9
0
0
Nov 2012
0
1
1
Sep 2013
1
0
0
Nov 2013
2
0
0
Dec 2013
3
0
0
Jan 2014
4
0
0
Feb 2014
2
3
0
Mar 2014
7
0
0
Apr 2014
9
0
0
May 2014
7
0
0
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1
0
0
Jul 2014
2
0
0
Aug 2014
3
0
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Oct 2014
1
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4
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Jan 2015
2
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1
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Mar 2015
12
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Apr 2015
11
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May 2015
7
0
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Jun 2015
16
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1
Jul 2015
4
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11
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2
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5
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10
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6
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2
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2
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1
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2
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1
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2
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17
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23
1
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1
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5
1
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5
0
1
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6
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4
0
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4
0
0
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3
2
1
Jul 2017
4
4
1
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5
5
1
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5
5
1
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3
3
1
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6
6
0
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4
4
0
Jan 2018
4
4
0
Feb 2018
7
7
0
Mar 2018
7
8
0
Apr 2018
6
7
0
May 2018
9
10
0
Jun 2018
6
7
0
Jul 2018
4
4
0
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3
3
1
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4
4
2
Oct 2018
2
2
1
Nov 2018
3
3
0
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3
3
1
Jan 2019
8
6
0
Feb 2019
3
2
2
Mar 2019
5
5
3
Apr 2019
6
6
4
May 2019
2
2
2
Jun 2019
2
2
1
Jul 2019
1
1
2
Aug 2019
2
2
4
Sep 2019
0
0
1
Oct 2019
3
3
1
Nov 2019
0
0
2
Dec 2019
7
7
2
Jan 2020
1
1
2
Feb 2020
2
2
1
Mar 2020
2
2
1
Apr 2020
2
2
1
May 2020
6
6
2
Jun 2020
6
6
2
Jul 2020
4
4
2
Aug 2020
2
2
1
Sep 2020
8
8
2
Oct 2020
7
7
1
Nov 2020
1
1
2
Dec 2020
2
2
0
Jan 2021
7
6
1
Feb 2021
2
2
2
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1
1
3
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0
0
2
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2
2
0
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5
5
3
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3
3
4
Oct 2021
5
5
14
Nov 2021
6
6
9
Dec 2021
9
9
1
Jan 2022
7
7
0
Feb 2022
14
14
2
Mar 2022
10
10
3
Apr 2022
4
4
1
May 2022
19
19
12
Jun 2022
19
18
2
Jul 2022
11
11
2
Aug 2022
17
17
1
Sep 2022
23
23
5
Oct 2022
18
18
2
Nov 2022
6
5
0
Dec 2022
5
5
3
Jan 2023
7
7
4
Feb 2023
29
29
0
Mar 2023
3
3
1
Apr 2023
1
1
1
May 2023
1
1
5
Jun 2023
0
0
2
Jul 2023
2
2
4
Aug 2023
1
1
3
Sep 2023
2
2
3
Oct 2023
4
4
2
Nov 2023
3
3
2
Dec 2023
4
4
0
Jan 2024
2
2
2
Feb 2024
1
1
0
Mar 2024
4
4
45
Total
1350
478
244
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