(3GdhSjW aj TQM bGfhf GdJLGQI GdHMQjI (B/ s - (3GdYWjQ, YHO GdbGOQ MSjfs ((3YeGf (B:s (3ecJHI OGQ GdKbGaI,s, 1999)
Keywords: (3GdbGfhf GdJLGQjs; (3GdbGfhf GdHMQjs; (3Gdfbd GdHMQjs