Volume 16, Issue 16, December 2015, Pages 6947-6951
Volume 16, Issue 10, October 2015, Pages 4169-4172
Volume 16, Issue 6, June 2015, Pages 2245-2250
Volume 15, Issue 4, April 2014, Pages 1545-1549
Volume 14, Issue 8, August 2013, Pages 4595-4598
Volume 14, Issue 6, June 2013, Pages 3677-3680
Volume 14, Issue 3, March 2013, Pages 2049-2052
Volume 14, Issue 1, January 2013, Pages 529-532
Volume 12, Issue 9, September 2011, Pages 2405-2409