Volume 17, Issue 2, February 2016, Pages 733-738
Volume 16, Issue 13, December 2015, Pages 5199-5203
Volume 14, Issue 3, March 2013, Pages 1813-1817
Volume 13, Issue 12, December 2012, Pages 6305-6310
Volume 9, Issue 2, February 2008, Pages 217-220
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