(3GdTQWI GdeYGUQI hMbhb GdEfSGf (B:s (3GdJLQHI GdCQOfjI (B/s - (3GdYeQGJ, CMeO UGdMs ((3YeGf, GdCQOf (B:s (3GdHfc GdCgdj GdCQOfj,s, 1998)
(3HHdjhLQGajI (B: (3U(B. 368-373.s
Keywords: (3GdTQWI s -- (3GdCQOfs; (3Mbhb GdEfSGfs -- (3GdCQOfs