Volume 15, Issue 23, December 2014, Pages 10319-10323
Volume 14, Issue 12, December 2013, Pages 7401-7407
Volume 13, Issue 4, April 2012, Pages 1575-1578
Volume 9, Issue 2, February 2008, Pages 267-270
Volume 2, Issue 2, February 2001, Pages 143-146
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