(3OQGSGJ aj GdJGQjN GdSGSGfj hGdHjRfWjs - (3GdMOjKj,bMWGf YHO GdSJGQs ((3GdHUQI,(B[(3GdYQGb(B]:s (3LGeYI GdHUQI,s, 1986)
Keywords: (3GdOhdI GdSGSGfjIs