(3OQGSI Mhd RjGOI h JMSjf GdESJaGOI ef fXe GdQj GdMOjKI (B/ s - (3GdefXeI GdYQHjI ddJfejI GdRQGYjIs ((3GdNQWhe (B:s (3LGeYI GdOhd GdYQHjI,s, 1998)
Keywords: (3GdQjs; (3GdCfXeIs