(3JCedGJ aj GdacQ hGdOYhI (B/s - (3GdYHOI, eMeOs ((3YeGf, GdCQOf (B:s (3OGQ GdLhgQj ddfTQ hGdJhRjY,s, 2000)
Keywords: (3GdadSaI GdESdGejIs; (3GdOYhI GdESdGejIs