(3YHOGdfGUQ hYdGbGJg GdNajI (B/ s - (3GMeO YHOGdeLjOs ([S.N] : (3GdRgQGA ddGYdGe GdYQHi , s, 1994)
Keywords: (3GdSO GdYGdis; (3LeGd YHOGdfGUQs; (3eUQ (B- (3GdGMhGd GdSjGSjIs