(3GdYed GdEYdGej GdCefj GdYQHj (B:s (3GdeTcdGJ hGdMdhd (B/s - (3YSjQj, YHO GdQMef Hf eMeOs ((3GdQjGV (B:s (3CcGOjejI fGja GdYQHjI ddYdhe GdCefjI,s, 2000)
(3HHdjhLQGajI (B: (3U(B. 165-170.s
Keywords: (3GdCef GdOGNdj aj hSGFd GdEYdGes -- (3GdHdGO GdYQHjIs