Volume 10, Issue 3, March and April 2001, Pages 101-103
A. Asadzadeh majili
Volume 8, Issue 4, May and June 2000, Pages 89-92
A. Asadzadeh manjili
Volume 7, Issue 4, March and April 1999, Pages 103-110
A. Asadzadeh manjili; A. Ghorbanzad
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