Volume 14, Issue 9, September 2013, Pages 4965-4972
Volume 13, Issue 7, July 2012, Pages 3159-3163
Volume 11, Issue 6, June 2010, Pages 1459-1464
Volume 9, Issue 2, February 2008, Pages 259-262
Volume 8, Issue 3, March 2007, Pages 348-349
Volume 8, Issue 1, January 2007, Pages 113-118
Volume 4, Issue 1, January 2003, Pages 23-30
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