Volume 15, Issue 18, December 2014, Pages 7489-7497
Volume 15, Issue 16, December 2014, Pages 6685-6689
Volume 15, Issue 4, April 2014, Pages 1771-1774
Volume 15, Issue 2, February 2014, Pages 577-583
Volume 14, Issue 5, May 2013, Pages 2699-2701
Volume 12, Issue 11, November 2011, Pages 2819-2823
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