Volume 20, KGS, 2013, Pages 235-253
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Volume 16, KGS, 2006, Pages 343-366
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Volume 14, KGS, 2004, Pages 379-404
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Volume 9, KGS, 1996, Pages 235-268
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Volume 8, KGS, 1995, Pages 169-176
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Volume 7, KGS, 1993, Pages 355-384
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