(3QMjd GdcGOMjf (B:s (3eLehYI bUUjI (B/s - (3GdTeQj, YHO GdMajX GdLGRYs 1379 (3gLQj(B-s ((3GdQjGV (B:s (3OGQ GdTHd ddfTQ hGdJhRjY ,s, 1992)
Keywords: (3GdbUU GdYQHjI GdbUjQIs -- (3GdSYhOjIs