(3JGQjN GdGOH GdJhfSi(B: (3eNJGQGJ ef GdGOH ai GdYgOjf GdeQGOi hGdMSjfi (B/ s - (3eLehYI ef GdGSGJPI HGdLGeYI Gds ([S.N] : (3HjJ GdMceI , s, 1990)
Keywords: (3GdGOH GdYQHis; (3JhfSs; (3GdGOH GdJhfSis; (3JGQjN hfbOs