(3GdefXeGJ GdOhdjI GdYGdejI (B/ s - (3GHQGgje eMeO GdYfGfjs ((3GdbGgQI (B: s (3GdeWHYI GdJLGQjI GdMOjKI , s, 1997)
Keywords: (3GdbGfhf GdOhdj GdYGes