Volume 16, Issue 8, August 2015, Pages 3527-3531
Volume 16, Issue 1, January 2015, Pages 157-162
Volume 15, Issue 16, December 2014, Pages 6697-6701
Volume 15, Issue 2, February 2014, Pages 1011-1014
Volume 14, Issue 11, November 2013, Pages 6643-6647
Volume 13, Issue 6, June 2012, Pages 2931-2934