(3GdYbhO GdUZjQg (B: s (3GdhcGdg hGdcaGdg (B/ s - (3WdHg, GfhQs ([(3ZjQ eYQa(B] : s (3GdecJH GdLGeYj GdMOjK, s, 2004)
Keywords: (3GdYbhO(B. s; (3GdhcGdI(B. s; (3GdbGfhf(B. s; (3GdcaGdI(B. s