IEEE Communications Magazine
IEEE Communications Magazine > 1981 > 19 > 1 > 63 - 64
IEEE Communications Magazine > 1981 > 19 > 1 > 67 - 68
IEEE Communications Magazine > 1981 > 19 > 1 > 63 - 64
IEEE Communications Magazine > 1981 > 19 > 1 > 67 - 68