(3habG dGMOGK GdJYOjdGJs - (3GTQa GOhGQO(B, (3MfGs ((3GdbGgQI(B:s (3GdecJH Gdafj ddGUOGQGJ GdbGfhfjI(B,s, 1999)
Keywords: (3bGfhf JLGQjs