Volume 11, 43-44, May 2010, Pages 239-260
10.22091/pfk.2010.166
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Volume 9, Issue 3, May 2008, Pages 107-117
10.22091/pfk.2008.261
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Volume 3, 9-10, November 2001, Pages 163-183
10.22091/pfk.2001.410
azezalah fahime