Volume 13, Issue 5, May 2012, Pages 2229-2234
Volume 13, Issue 2, February 2012, Pages 447-450
Volume 13, Issue 2, February 2012, Pages 521-525
Volume 12, Issue 8, August 2011, Pages 1887-1892
Volume 12, Issue 7, July 2011, Pages 1731-1734
Volume 11, Issue 4, April 2010, Pages 1091-1098
Volume 9, Issue 1, January 2008, Pages 48-52
Volume 6, Issue 1, January 2005, Pages 54-57
Volume 1, Issue 3, March 2000, Pages 219-222
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