Volume 34, Issue 3, January and February 2010, Pages 307-324
Volume 33, Issue 6, January and February 2009, Pages 463-476
Volume 30, Issue 2, January and February 2006, Pages 171-180
Volume 29, Issue 1, January and February 2005, Pages 1-10
Volume 29, Issue 4, January and February 2005, Pages 385-398
Volume 23, Issue 1, January and February 1999, Pages 1-10
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