(3GdYdGL HGdRjJ hGdRjJhf (B/s - (3GdQhGLHI, YGjOI CMeOs ((3YeGf(B-(3GdGQOf(B:s (3OGQ GdGSQGA ddfTQ hGdJhRjY,s, 1995)
Keywords: (3RjJ GdRjJhfs; (3GdWH GdTYHjs