(3GdELQGe GdeYGUQ (B/s - (3YjO, eMeO aJMjs ((3GdQjGV (B:s (3CcGOjejI fGja GdYQHjI ddYdhe GdCefjI ,s, 1999)
Keywords: (3GdYfas; (3Ydhe GLJeGYjIs; (3GdLQjeIs