Volume 13, Issue 12, December 2012, Pages 6145-6149
Volume 13, Issue 12, December 2012, Pages 6391-6395
Volume 13, Issue 10, October 2012, Pages 5033-5036
Volume 13, Issue 5, May 2012, Pages 1911-1915
Volume 13, Issue 1, January 2012, Pages 41-48
Volume 12, Issue 6, June 2011, Pages 1573-1580