(3OGjhf GdfKQ GdHQj (B: s (3CSGWjQ (B/ s - (3Gdchfj, EHQGgjes ((3WQGHdS (B((3djHjG(B) :s (3GdOGQ GdLeGgjQjI,s, 1997)
Keywords: (3GdCOH GdYQHjs; (3GdfKQ GdYQHjs