Volume 13, Issue 5, May 2012, Pages 1953-1956
Volume 12, Issue 11, November 2011, Pages 2951-2957
Volume 12, Issue 10, October 2011, Pages 2747-2752
Volume 12, Issue 9, September 2011, Pages 2343-2348
Volume 11, Issue 5, May 2010, Pages 1267-1272
Volume 11, Issue 3, March 2010, Pages 623-626
Volume 11, Issue 2, February 2010, Pages 309-312
Volume 10, Issue 4, April 2009, Pages 685-690
Volume 9, Issue 3, March 2008, Pages 403-408
Volume 9, Issue 1, January 2008, Pages 58-62
Volume 5, Issue 2, February 2004, Pages 183-187
Volume 4, Issue 4, April 2003, Pages 327-330
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