Electronics Letters
Electronics Letters > 1989 > 25 > 19 > 1266 - 1268
Electronics Letters > 1989 > 25 > 19 > 1293 - 1294
Electronics Letters > 1990 > 26 > 10 > 618 - 619
Electronics Letters > 1990 > 26 > 10 > 626 - 627
Electronics Letters > 1991 > 27 > 7 > 601 - 603
Electronics Letters > 1992 > 28 > 17 > 1618 - 1619