Volume 8, Issue 1, January 2007, Pages 127-134
Volume 7, Issue 3, March 2006, Pages 431-433
Volume 7, Issue 2, February 2006, Pages 253-259
Volume 7, Issue 2, February 2006, Pages 313-317
Volume 6, Issue 3, March 2005, Pages 382-386
Volume 2, Issue 3, March 2001, Pages 199-202
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