Volume 7, Issue 1, January 2006, Pages 60-64
Volume 7, Issue 1, January 2006, Pages 95-100
Volume 7, Issue 1, January 2006, Pages 154-156
Volume 6, Issue 3, March 2005, Pages 364-369
Volume 6, Issue 1, January 2005, Pages 22-26
Volume 4, Issue 2, February 2003, Pages 125-130