(3CVhGA Ydi GdESJQGJjLjI GdSYhOjI (B/ s - (3SdWGf, YHO GdQMefs ((3YeGf (B:s (3GdeDSI GdYQHjI ddTDhf GdCSJQGJjLjI,s, 1990)
Keywords: (3GdESJQGJjLjIs; (3GdSYhOjIs; (3GdJGQjNs; (3GdYdGbGJ GdOhdjIs; (3GdHdOGf GdYQHjIs