(3GdHfGA GdOQGei (B((3GdfSNI GdQGHYI dOGQ GdHTjQ HYeGf(B) / s - (3YHOGdYRjR MehOIs ([S.N] : (3ecJHI GdGfLdhGdeUQjI , s, 1993)
Keywords: (3GdGOH GdYQHis; (3GdeSQMs; (3JGQjN hfbOs