(3GdhSjW aj TQM bGfhf GdJLGQI GdHMQjI (B: s (3OQGSI ebGQfI (B/ s - (3GdYWjQ, YHO GdbGOQ MSjfs ((3YeGf (B:s (3ecJHI OGQ GdKbGaI ddfTQ h GdJhRjY,s, 1999)
Keywords: (3GdbGfhf GdHMQjs; (3bGfhf GdCYeGd GdJLGQjIs