(3fbd GdJcfhdhLjG h YedjI GdJfejI (B: s (3hLgI fXQ ef GdOhd GdfGejI (B/ s - (3bGSe, bGSe Lejds ((3YeGf (B:s (3GdefXeI GdYQHjI ddYdhe GdEOGQjI,s, 1984)
Keywords: (3GdSjGSI GdEbJUGOjIs; (3GdYdGbGJ GdEbJUGOjI GdOhdjIs; (3GdJcfhdhLjGs