Volume 14, Issue 6, June 2013, Pages 3393-3402
Volume 13, Issue 9, September 2012, Pages 4249-4253
Volume 13, Issue 1, January 2012, Pages 187-190
Volume 12, Issue 2, February 2011, Pages 447-451
Volume 11, Issue 5, May 2010, Pages 1383-1388