(3JMOjGJ GdEYdGe GdYQHj (B:s (3OQGSGJ GdEYdGe GdeUOGbjI (B- (3GdMQjI (B- (3GdJfejI(B- (3h GdgjefI GdKbGajI (B/s ((3YeGf (B:s (3OGQ GdTQhb ,s, 1999)
(3HHdjhZQGajG (B: (3U(B.381-382s
Keywords: (3GdJfejIs; (3GdMQjI s; (3h GdgjefI GdKbGajIs; (3OQGSGJ GdEYdGe GdeUOGbjI s