Volume 16, Issue 17, December 2015, Pages 7683-7688
Volume 14, Issue 3, March 2013, Pages 1995-1998
Volume 12, Issue 8, August 2011, Pages 2101-2104
Volume 10, Issue 3, March 2009, Pages 497-500
Volume 10, Issue 2, February 2009, Pages 209-212